./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:40:45,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:40:45,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:40:45,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:40:45,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:40:45,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:40:45,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:40:45,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:40:45,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:40:45,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:40:45,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:40:45,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:40:45,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:40:45,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:40:45,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:40:45,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:40:45,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:40:45,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:40:45,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:40:45,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:40:45,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:40:45,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:40:45,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:40:45,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:40:45,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:40:45,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:40:45,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:40:45,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:40:45,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:40:45,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:40:45,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:40:45,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:40:45,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:40:45,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:40:45,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:40:45,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:40:45,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:40:45,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:40:45,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:40:45,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:40:45,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:40:45,559 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 12:40:45,611 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:40:45,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:40:45,612 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:40:45,612 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:40:45,613 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:40:45,614 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:40:45,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:40:45,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:40:45,615 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:40:45,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:40:45,616 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:40:45,616 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:40:45,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:40:45,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:40:45,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:40:45,618 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 12:40:45,618 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 12:40:45,618 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 12:40:45,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:40:45,619 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:40:45,619 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:40:45,620 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:40:45,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:40:45,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:40:45,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:40:45,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:40:45,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:40:45,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:40:45,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:40:45,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:40:45,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 [2022-11-20 12:40:45,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:40:45,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:40:45,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:40:45,941 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:40:45,942 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:40:45,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-11-20 12:40:49,366 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:40:49,715 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:40:49,716 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-11-20 12:40:49,726 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/data/4dd0982bc/a5f672a83f424c63b0e548bf4be10b01/FLAG956749883 [2022-11-20 12:40:49,744 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/data/4dd0982bc/a5f672a83f424c63b0e548bf4be10b01 [2022-11-20 12:40:49,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:40:49,749 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:40:49,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:40:49,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:40:49,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:40:49,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:40:49" (1/1) ... [2022-11-20 12:40:49,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ffffe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:49, skipping insertion in model container [2022-11-20 12:40:49,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:40:49" (1/1) ... [2022-11-20 12:40:49,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:40:49,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:40:50,080 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2022-11-20 12:40:50,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:40:50,130 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-20 12:40:50,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@629b951e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:50, skipping insertion in model container [2022-11-20 12:40:50,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:40:50,133 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-20 12:40:50,136 INFO L158 Benchmark]: Toolchain (without parser) took 385.69ms. Allocated memory is still 127.9MB. Free memory was 97.5MB in the beginning and 87.5MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:40:50,137 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 127.9MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:40:50,138 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.65ms. Allocated memory is still 127.9MB. Free memory was 97.2MB in the beginning and 87.5MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:40:50,140 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 127.9MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.65ms. Allocated memory is still 127.9MB. Free memory was 97.2MB in the beginning and 87.5MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 144]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:40:52,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:40:52,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:40:52,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:40:52,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:40:52,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:40:52,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:40:52,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:40:52,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:40:52,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:40:52,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:40:52,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:40:52,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:40:52,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:40:52,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:40:52,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:40:52,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:40:52,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:40:52,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:40:52,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:40:52,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:40:52,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:40:52,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:40:52,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:40:52,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:40:52,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:40:52,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:40:52,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:40:52,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:40:52,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:40:52,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:40:52,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:40:52,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:40:52,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:40:52,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:40:52,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:40:52,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:40:52,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:40:52,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:40:52,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:40:52,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:40:52,921 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-20 12:40:52,983 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:40:52,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:40:52,988 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:40:52,988 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:40:52,989 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:40:52,990 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:40:52,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:40:52,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:40:52,991 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:40:52,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:40:52,993 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:40:52,993 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:40:52,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:40:52,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:40:52,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:40:52,995 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 12:40:52,995 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 12:40:52,996 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 12:40:52,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:40:52,996 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:40:52,996 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:40:52,997 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:40:52,997 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:40:52,997 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:40:52,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:40:52,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:40:52,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:40:52,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:40:52,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:40:52,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:40:53,000 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:40:53,000 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:40:53,000 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:40:53,001 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 [2022-11-20 12:40:53,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:40:53,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:40:53,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:40:53,528 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:40:53,528 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:40:53,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-11-20 12:40:57,354 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:40:57,680 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:40:57,680 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-11-20 12:40:57,694 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/data/ea5b8da5c/323642d44d8e4a3a8a944646217a6a5e/FLAG0c4bc9de0 [2022-11-20 12:40:57,729 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/data/ea5b8da5c/323642d44d8e4a3a8a944646217a6a5e [2022-11-20 12:40:57,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:40:57,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:40:57,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:40:57,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:40:57,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:40:57,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:40:57" (1/1) ... [2022-11-20 12:40:57,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4788b4b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:57, skipping insertion in model container [2022-11-20 12:40:57,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:40:57" (1/1) ... [2022-11-20 12:40:57,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:40:57,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:40:58,001 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2022-11-20 12:40:58,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:40:58,036 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 12:40:58,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:40:58,067 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2022-11-20 12:40:58,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:40:58,085 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:40:58,133 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2022-11-20 12:40:58,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:40:58,181 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:40:58,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:58 WrapperNode [2022-11-20 12:40:58,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:40:58,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:40:58,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:40:58,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:40:58,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:58" (1/1) ... [2022-11-20 12:40:58,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:58" (1/1) ... [2022-11-20 12:40:58,308 INFO L138 Inliner]: procedures = 28, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 250 [2022-11-20 12:40:58,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:40:58,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:40:58,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:40:58,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:40:58,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:58" (1/1) ... [2022-11-20 12:40:58,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:58" (1/1) ... [2022-11-20 12:40:58,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:58" (1/1) ... [2022-11-20 12:40:58,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:58" (1/1) ... [2022-11-20 12:40:58,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:58" (1/1) ... [2022-11-20 12:40:58,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:58" (1/1) ... [2022-11-20 12:40:58,349 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:58" (1/1) ... [2022-11-20 12:40:58,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:58" (1/1) ... [2022-11-20 12:40:58,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:40:58,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:40:58,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:40:58,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:40:58,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:58" (1/1) ... [2022-11-20 12:40:58,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:40:58,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:40:58,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:40:58,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:40:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:40:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:40:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:40:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 12:40:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:40:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:40:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:40:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:40:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:40:58,465 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:40:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 12:40:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 12:40:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:40:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:40:58,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:40:58,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:40:58,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 12:40:58,468 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:40:58,602 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:40:58,605 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:40:59,591 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:40:59,853 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:40:59,854 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-20 12:40:59,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:40:59 BoogieIcfgContainer [2022-11-20 12:40:59,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:40:59,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:40:59,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:40:59,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:40:59,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:40:57" (1/3) ... [2022-11-20 12:40:59,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce6e774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:40:59, skipping insertion in model container [2022-11-20 12:40:59,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:58" (2/3) ... [2022-11-20 12:40:59,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce6e774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:40:59, skipping insertion in model container [2022-11-20 12:40:59,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:40:59" (3/3) ... [2022-11-20 12:40:59,877 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2022-11-20 12:40:59,902 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:40:59,902 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-11-20 12:40:59,903 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:41:00,070 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 12:41:00,131 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 12:41:00,164 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 238 places, 246 transitions, 516 flow [2022-11-20 12:41:00,180 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 238 places, 246 transitions, 516 flow [2022-11-20 12:41:00,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 246 transitions, 516 flow [2022-11-20 12:41:00,372 INFO L130 PetriNetUnfolder]: 18/243 cut-off events. [2022-11-20 12:41:00,372 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:41:00,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 243 events. 18/243 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 242 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 192. Up to 3 conditions per place. [2022-11-20 12:41:00,386 INFO L119 LiptonReduction]: Number of co-enabled transitions 3276 [2022-11-20 12:41:52,314 INFO L134 LiptonReduction]: Checked pairs total: 5406 [2022-11-20 12:41:52,314 INFO L136 LiptonReduction]: Total number of compositions: 268 [2022-11-20 12:41:52,332 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 59 transitions, 142 flow [2022-11-20 12:41:52,460 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1565 states, 1237 states have (on average 4.568310428455942) internal successors, (5651), 1564 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:52,494 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:41:52,503 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6bdbd74d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:41:52,503 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-20 12:41:52,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 1565 states, 1237 states have (on average 4.568310428455942) internal successors, (5651), 1564 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:52,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 12:41:52,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:52,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 12:41:52,524 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:41:52,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:52,533 INFO L85 PathProgramCache]: Analyzing trace with hash 36072, now seen corresponding path program 1 times [2022-11-20 12:41:52,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:41:52,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301060576] [2022-11-20 12:41:52,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:52,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:41:52,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:41:52,558 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:41:52,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 12:41:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:52,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:41:52,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:41:52,912 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-20 12:41:52,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-20 12:41:52,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:41:52,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:41:52,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:41:52,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301060576] [2022-11-20 12:41:52,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301060576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:52,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:41:52,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:41:52,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915522416] [2022-11-20 12:41:52,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:52,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:41:52,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:41:53,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:41:53,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:41:53,017 INFO L87 Difference]: Start difference. First operand has 1565 states, 1237 states have (on average 4.568310428455942) internal successors, (5651), 1564 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:53,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:53,361 INFO L93 Difference]: Finished difference Result 1562 states and 5460 transitions. [2022-11-20 12:41:53,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:41:53,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-20 12:41:53,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:53,393 INFO L225 Difference]: With dead ends: 1562 [2022-11-20 12:41:53,394 INFO L226 Difference]: Without dead ends: 1562 [2022-11-20 12:41:53,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:41:53,398 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:53,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 1 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:41:53,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2022-11-20 12:41:53,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1562. [2022-11-20 12:41:53,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1237 states have (on average 4.413904607922393) internal successors, (5460), 1561 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:53,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 5460 transitions. [2022-11-20 12:41:53,546 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 5460 transitions. Word has length 2 [2022-11-20 12:41:53,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:53,547 INFO L495 AbstractCegarLoop]: Abstraction has 1562 states and 5460 transitions. [2022-11-20 12:41:53,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:53,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 5460 transitions. [2022-11-20 12:41:53,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 12:41:53,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:53,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 12:41:53,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:41:53,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:41:53,764 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:41:53,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:53,765 INFO L85 PathProgramCache]: Analyzing trace with hash 36073, now seen corresponding path program 1 times [2022-11-20 12:41:53,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:41:53,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802563224] [2022-11-20 12:41:53,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:53,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:41:53,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:41:53,767 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:41:53,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 12:41:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:53,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:41:53,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:41:53,985 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:41:53,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:41:54,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:41:54,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:41:54,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:41:54,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802563224] [2022-11-20 12:41:54,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1802563224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:54,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:41:54,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:41:54,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370196735] [2022-11-20 12:41:54,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:54,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:41:54,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:41:54,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:41:54,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:41:54,024 INFO L87 Difference]: Start difference. First operand 1562 states and 5460 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:54,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:54,694 INFO L93 Difference]: Finished difference Result 3121 states and 10917 transitions. [2022-11-20 12:41:54,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:41:54,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-20 12:41:54,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:54,747 INFO L225 Difference]: With dead ends: 3121 [2022-11-20 12:41:54,747 INFO L226 Difference]: Without dead ends: 3121 [2022-11-20 12:41:54,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:41:54,749 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 45 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:54,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 12:41:54,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2022-11-20 12:41:54,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 1564. [2022-11-20 12:41:54,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1239 states have (on average 4.411622276029056) internal successors, (5466), 1563 states have internal predecessors, (5466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:54,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 5466 transitions. [2022-11-20 12:41:54,843 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 5466 transitions. Word has length 2 [2022-11-20 12:41:54,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:54,843 INFO L495 AbstractCegarLoop]: Abstraction has 1564 states and 5466 transitions. [2022-11-20 12:41:54,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:54,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 5466 transitions. [2022-11-20 12:41:54,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 12:41:54,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:54,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 12:41:54,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:41:55,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:41:55,055 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:41:55,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:55,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1124838, now seen corresponding path program 1 times [2022-11-20 12:41:55,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:41:55,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270191462] [2022-11-20 12:41:55,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:55,058 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:41:55,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:41:55,059 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:41:55,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 12:41:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:55,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:41:55,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:41:55,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:41:55,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:41:55,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:41:55,345 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-20 12:41:55,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-20 12:41:55,387 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-20 12:41:55,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 45 [2022-11-20 12:41:55,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:41:55,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:41:55,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:41:55,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:41:55,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:41:55,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270191462] [2022-11-20 12:41:55,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270191462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:55,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:41:55,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:41:55,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057797109] [2022-11-20 12:41:55,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:55,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:41:55,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:41:55,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:41:55,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:41:55,540 INFO L87 Difference]: Start difference. First operand 1564 states and 5466 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:55,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:55,909 INFO L93 Difference]: Finished difference Result 1283 states and 4344 transitions. [2022-11-20 12:41:55,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:41:55,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 12:41:55,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:55,924 INFO L225 Difference]: With dead ends: 1283 [2022-11-20 12:41:55,924 INFO L226 Difference]: Without dead ends: 1283 [2022-11-20 12:41:55,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:41:55,926 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 94 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:55,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 1 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 1 Unchecked, 0.3s Time] [2022-11-20 12:41:55,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-11-20 12:41:55,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1283. [2022-11-20 12:41:55,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1034 states have (on average 4.2011605415860735) internal successors, (4344), 1282 states have internal predecessors, (4344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:56,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 4344 transitions. [2022-11-20 12:41:56,031 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 4344 transitions. Word has length 3 [2022-11-20 12:41:56,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:56,032 INFO L495 AbstractCegarLoop]: Abstraction has 1283 states and 4344 transitions. [2022-11-20 12:41:56,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:56,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 4344 transitions. [2022-11-20 12:41:56,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 12:41:56,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:56,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 12:41:56,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-20 12:41:56,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:41:56,234 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:41:56,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:56,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1124837, now seen corresponding path program 1 times [2022-11-20 12:41:56,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:41:56,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069951666] [2022-11-20 12:41:56,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:56,236 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:41:56,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:41:56,239 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:41:56,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 12:41:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:56,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 12:41:56,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:41:56,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:41:56,467 INFO L321 Elim1Store]: treesize reduction 86, result has 25.9 percent of original size [2022-11-20 12:41:56,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 55 [2022-11-20 12:41:56,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:41:56,851 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:41:56,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 32 [2022-11-20 12:41:56,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:41:56,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:41:56,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:41:56,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069951666] [2022-11-20 12:41:56,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069951666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:56,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:41:56,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:41:56,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899572836] [2022-11-20 12:41:56,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:56,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:41:56,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:41:56,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:41:56,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:41:56,934 INFO L87 Difference]: Start difference. First operand 1283 states and 4344 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:57,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:57,202 INFO L93 Difference]: Finished difference Result 1284 states and 4346 transitions. [2022-11-20 12:41:57,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:41:57,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 12:41:57,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:57,212 INFO L225 Difference]: With dead ends: 1284 [2022-11-20 12:41:57,213 INFO L226 Difference]: Without dead ends: 1284 [2022-11-20 12:41:57,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:41:57,219 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:57,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 91 Unchecked, 0.2s Time] [2022-11-20 12:41:57,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2022-11-20 12:41:57,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1284. [2022-11-20 12:41:57,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1035 states have (on average 4.19903381642512) internal successors, (4346), 1283 states have internal predecessors, (4346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:57,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 4346 transitions. [2022-11-20 12:41:57,273 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 4346 transitions. Word has length 3 [2022-11-20 12:41:57,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:57,274 INFO L495 AbstractCegarLoop]: Abstraction has 1284 states and 4346 transitions. [2022-11-20 12:41:57,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:57,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 4346 transitions. [2022-11-20 12:41:57,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 12:41:57,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:57,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 12:41:57,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:41:57,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:41:57,486 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:41:57,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:57,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1123305, now seen corresponding path program 1 times [2022-11-20 12:41:57,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:41:57,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806431960] [2022-11-20 12:41:57,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:57,489 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:41:57,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:41:57,490 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:41:57,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 12:41:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:57,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:41:57,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:41:57,729 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:41:57,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:41:57,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:41:57,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:41:58,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:41:58,077 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:41:58,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806431960] [2022-11-20 12:41:58,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806431960] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:41:58,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:41:58,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-20 12:41:58,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072551450] [2022-11-20 12:41:58,078 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:41:58,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:41:58,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:41:58,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:41:58,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:41:58,079 INFO L87 Difference]: Start difference. First operand 1284 states and 4346 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:59,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:59,846 INFO L93 Difference]: Finished difference Result 3842 states and 13023 transitions. [2022-11-20 12:41:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:41:59,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 12:41:59,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:59,881 INFO L225 Difference]: With dead ends: 3842 [2022-11-20 12:41:59,881 INFO L226 Difference]: Without dead ends: 3842 [2022-11-20 12:41:59,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:41:59,884 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 303 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:59,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 4 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 12:41:59,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2022-11-20 12:41:59,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 1290. [2022-11-20 12:42:00,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1041 states have (on average 4.189241114313161) internal successors, (4361), 1289 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:00,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 4361 transitions. [2022-11-20 12:42:00,009 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 4361 transitions. Word has length 3 [2022-11-20 12:42:00,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:00,010 INFO L495 AbstractCegarLoop]: Abstraction has 1290 states and 4361 transitions. [2022-11-20 12:42:00,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:00,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 4361 transitions. [2022-11-20 12:42:00,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 12:42:00,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:00,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 12:42:00,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:00,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:00,223 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:42:00,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:00,223 INFO L85 PathProgramCache]: Analyzing trace with hash 34870166, now seen corresponding path program 1 times [2022-11-20 12:42:00,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:00,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590800975] [2022-11-20 12:42:00,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:00,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:00,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:00,225 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:00,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 12:42:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:00,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:42:00,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:00,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:00,480 INFO L321 Elim1Store]: treesize reduction 86, result has 25.9 percent of original size [2022-11-20 12:42:00,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 55 [2022-11-20 12:42:00,883 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-20 12:42:00,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2022-11-20 12:42:01,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:42:01,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:42:01,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:01,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590800975] [2022-11-20 12:42:01,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590800975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:01,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:01,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:42:01,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236739336] [2022-11-20 12:42:01,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:01,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:01,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:01,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:01,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:01,027 INFO L87 Difference]: Start difference. First operand 1290 states and 4361 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:01,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:01,261 INFO L93 Difference]: Finished difference Result 1294 states and 4370 transitions. [2022-11-20 12:42:01,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:01,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 12:42:01,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:01,274 INFO L225 Difference]: With dead ends: 1294 [2022-11-20 12:42:01,274 INFO L226 Difference]: Without dead ends: 1294 [2022-11-20 12:42:01,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:01,275 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:01,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 47 Unchecked, 0.2s Time] [2022-11-20 12:42:01,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2022-11-20 12:42:01,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1294. [2022-11-20 12:42:01,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1045 states have (on average 4.181818181818182) internal successors, (4370), 1293 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:01,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 4370 transitions. [2022-11-20 12:42:01,319 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 4370 transitions. Word has length 4 [2022-11-20 12:42:01,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:01,319 INFO L495 AbstractCegarLoop]: Abstraction has 1294 states and 4370 transitions. [2022-11-20 12:42:01,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:01,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 4370 transitions. [2022-11-20 12:42:01,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 12:42:01,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:01,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 12:42:01,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-20 12:42:01,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:01,536 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:42:01,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:01,536 INFO L85 PathProgramCache]: Analyzing trace with hash 34829029, now seen corresponding path program 1 times [2022-11-20 12:42:01,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:01,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333815519] [2022-11-20 12:42:01,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:01,537 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:01,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:01,538 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:01,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 12:42:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:01,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:42:01,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:01,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:01,764 INFO L321 Elim1Store]: treesize reduction 86, result has 25.9 percent of original size [2022-11-20 12:42:01,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 55 [2022-11-20 12:42:02,192 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-20 12:42:02,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2022-11-20 12:42:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:42:02,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:42:02,269 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:02,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333815519] [2022-11-20 12:42:02,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333815519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:02,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:02,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:42:02,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730094384] [2022-11-20 12:42:02,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:02,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:02,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:02,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:02,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:02,271 INFO L87 Difference]: Start difference. First operand 1294 states and 4370 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:02,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:02,487 INFO L93 Difference]: Finished difference Result 1294 states and 4369 transitions. [2022-11-20 12:42:02,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:02,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 12:42:02,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:02,496 INFO L225 Difference]: With dead ends: 1294 [2022-11-20 12:42:02,496 INFO L226 Difference]: Without dead ends: 1294 [2022-11-20 12:42:02,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:02,497 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:02,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 47 Unchecked, 0.2s Time] [2022-11-20 12:42:02,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2022-11-20 12:42:02,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1294. [2022-11-20 12:42:02,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1045 states have (on average 4.180861244019138) internal successors, (4369), 1293 states have internal predecessors, (4369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:02,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 4369 transitions. [2022-11-20 12:42:02,538 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 4369 transitions. Word has length 4 [2022-11-20 12:42:02,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:02,538 INFO L495 AbstractCegarLoop]: Abstraction has 1294 states and 4369 transitions. [2022-11-20 12:42:02,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:02,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 4369 transitions. [2022-11-20 12:42:02,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 12:42:02,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:02,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 12:42:02,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:02,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:02,752 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:42:02,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:02,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1080997042, now seen corresponding path program 1 times [2022-11-20 12:42:02,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:02,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213508918] [2022-11-20 12:42:02,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:02,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:02,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:02,754 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:02,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 12:42:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:02,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:42:02,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:02,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:02,971 INFO L321 Elim1Store]: treesize reduction 79, result has 27.5 percent of original size [2022-11-20 12:42:02,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 48 [2022-11-20 12:42:03,133 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:42:03,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 12:42:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:03,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:42:03,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:03,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213508918] [2022-11-20 12:42:03,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213508918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:03,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:03,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:42:03,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139801448] [2022-11-20 12:42:03,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:03,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:03,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:03,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:03,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:03,192 INFO L87 Difference]: Start difference. First operand 1294 states and 4369 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:03,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:03,395 INFO L93 Difference]: Finished difference Result 1297 states and 4381 transitions. [2022-11-20 12:42:03,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:03,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 12:42:03,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:03,405 INFO L225 Difference]: With dead ends: 1297 [2022-11-20 12:42:03,405 INFO L226 Difference]: Without dead ends: 1297 [2022-11-20 12:42:03,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:03,406 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:03,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 47 Unchecked, 0.2s Time] [2022-11-20 12:42:03,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2022-11-20 12:42:03,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1297. [2022-11-20 12:42:03,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1297 states, 1048 states have (on average 4.180343511450381) internal successors, (4381), 1296 states have internal predecessors, (4381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:03,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 4381 transitions. [2022-11-20 12:42:03,457 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 4381 transitions. Word has length 5 [2022-11-20 12:42:03,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:03,458 INFO L495 AbstractCegarLoop]: Abstraction has 1297 states and 4381 transitions. [2022-11-20 12:42:03,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:03,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 4381 transitions. [2022-11-20 12:42:03,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 12:42:03,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:03,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 12:42:03,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:03,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:03,671 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:42:03,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:03,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1080997043, now seen corresponding path program 1 times [2022-11-20 12:42:03,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:03,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706725433] [2022-11-20 12:42:03,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:03,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:03,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:03,674 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:03,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 12:42:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:03,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:42:03,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:03,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:03,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:03,927 INFO L321 Elim1Store]: treesize reduction 49, result has 33.8 percent of original size [2022-11-20 12:42:03,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 35 [2022-11-20 12:42:03,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-11-20 12:42:04,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:04,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:42:04,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:04,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:42:04,078 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:04,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706725433] [2022-11-20 12:42:04,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706725433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:04,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:04,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:42:04,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920184564] [2022-11-20 12:42:04,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:04,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:42:04,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:04,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:42:04,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:42:04,081 INFO L87 Difference]: Start difference. First operand 1297 states and 4381 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:04,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:04,363 INFO L93 Difference]: Finished difference Result 1250 states and 4245 transitions. [2022-11-20 12:42:04,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:04,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 12:42:04,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:04,371 INFO L225 Difference]: With dead ends: 1250 [2022-11-20 12:42:04,371 INFO L226 Difference]: Without dead ends: 1250 [2022-11-20 12:42:04,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:42:04,372 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 88 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:04,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 1 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 1 Unchecked, 0.3s Time] [2022-11-20 12:42:04,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-11-20 12:42:04,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1250. [2022-11-20 12:42:04,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1021 states have (on average 4.157688540646425) internal successors, (4245), 1249 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:04,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4245 transitions. [2022-11-20 12:42:04,410 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 4245 transitions. Word has length 5 [2022-11-20 12:42:04,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:04,410 INFO L495 AbstractCegarLoop]: Abstraction has 1250 states and 4245 transitions. [2022-11-20 12:42:04,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:04,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 4245 transitions. [2022-11-20 12:42:04,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 12:42:04,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:04,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 12:42:04,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:04,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:04,628 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:42:04,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:04,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1079700118, now seen corresponding path program 1 times [2022-11-20 12:42:04,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:04,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707038504] [2022-11-20 12:42:04,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:04,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:04,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:04,630 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:04,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 12:42:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:04,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:42:04,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:04,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:04,905 INFO L321 Elim1Store]: treesize reduction 86, result has 25.9 percent of original size [2022-11-20 12:42:04,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 55 [2022-11-20 12:42:05,319 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-20 12:42:05,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2022-11-20 12:42:05,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:42:05,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:42:05,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:05,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707038504] [2022-11-20 12:42:05,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707038504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:05,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:05,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:42:05,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364858567] [2022-11-20 12:42:05,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:05,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:05,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:05,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:05,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:05,417 INFO L87 Difference]: Start difference. First operand 1250 states and 4245 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:05,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:05,606 INFO L93 Difference]: Finished difference Result 1249 states and 4241 transitions. [2022-11-20 12:42:05,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:05,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 12:42:05,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:05,613 INFO L225 Difference]: With dead ends: 1249 [2022-11-20 12:42:05,613 INFO L226 Difference]: Without dead ends: 1249 [2022-11-20 12:42:05,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:05,614 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:05,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 44 Unchecked, 0.2s Time] [2022-11-20 12:42:05,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2022-11-20 12:42:05,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1245. [2022-11-20 12:42:05,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 1017 states have (on average 4.16125860373648) internal successors, (4232), 1244 states have internal predecessors, (4232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:05,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 4232 transitions. [2022-11-20 12:42:05,651 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 4232 transitions. Word has length 5 [2022-11-20 12:42:05,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:05,651 INFO L495 AbstractCegarLoop]: Abstraction has 1245 states and 4232 transitions. [2022-11-20 12:42:05,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:05,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 4232 transitions. [2022-11-20 12:42:05,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:42:05,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:05,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:42:05,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:05,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:05,867 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:42:05,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:05,867 INFO L85 PathProgramCache]: Analyzing trace with hash -848837024, now seen corresponding path program 1 times [2022-11-20 12:42:05,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:05,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250515114] [2022-11-20 12:42:05,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:05,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:05,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:05,869 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:05,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 12:42:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:05,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:42:05,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:06,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:06,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:42:06,036 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:06,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250515114] [2022-11-20 12:42:06,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250515114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:06,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:06,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:42:06,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215260819] [2022-11-20 12:42:06,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:06,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:42:06,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:06,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:42:06,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:42:06,038 INFO L87 Difference]: Start difference. First operand 1245 states and 4232 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:06,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:06,514 INFO L93 Difference]: Finished difference Result 1333 states and 4437 transitions. [2022-11-20 12:42:06,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:42:06,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 12:42:06,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:06,521 INFO L225 Difference]: With dead ends: 1333 [2022-11-20 12:42:06,522 INFO L226 Difference]: Without dead ends: 1329 [2022-11-20 12:42:06,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:42:06,523 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 17 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:06,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:42:06,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2022-11-20 12:42:06,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1328. [2022-11-20 12:42:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1092 states have (on average 4.052197802197802) internal successors, (4425), 1327 states have internal predecessors, (4425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:06,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 4425 transitions. [2022-11-20 12:42:06,562 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 4425 transitions. Word has length 6 [2022-11-20 12:42:06,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:06,563 INFO L495 AbstractCegarLoop]: Abstraction has 1328 states and 4425 transitions. [2022-11-20 12:42:06,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:06,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 4425 transitions. [2022-11-20 12:42:06,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:42:06,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:06,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:42:06,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:06,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:06,775 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:42:06,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:06,776 INFO L85 PathProgramCache]: Analyzing trace with hash -849480157, now seen corresponding path program 1 times [2022-11-20 12:42:06,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:06,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730980475] [2022-11-20 12:42:06,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:06,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:06,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:06,777 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:06,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 12:42:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:06,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:42:06,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:06,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:07,037 INFO L321 Elim1Store]: treesize reduction 79, result has 27.5 percent of original size [2022-11-20 12:42:07,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 48 [2022-11-20 12:42:07,195 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:42:07,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 12:42:07,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:42:07,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:42:07,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:07,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730980475] [2022-11-20 12:42:07,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730980475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:07,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:07,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:42:07,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388720384] [2022-11-20 12:42:07,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:07,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:07,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:07,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:07,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:07,246 INFO L87 Difference]: Start difference. First operand 1328 states and 4425 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:07,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:07,451 INFO L93 Difference]: Finished difference Result 1326 states and 4422 transitions. [2022-11-20 12:42:07,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:07,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 12:42:07,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:07,458 INFO L225 Difference]: With dead ends: 1326 [2022-11-20 12:42:07,458 INFO L226 Difference]: Without dead ends: 1326 [2022-11-20 12:42:07,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:07,459 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:07,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 44 Unchecked, 0.2s Time] [2022-11-20 12:42:07,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2022-11-20 12:42:07,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1323. [2022-11-20 12:42:07,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1323 states, 1088 states have (on average 4.060661764705882) internal successors, (4418), 1322 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:07,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 4418 transitions. [2022-11-20 12:42:07,498 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 4418 transitions. Word has length 6 [2022-11-20 12:42:07,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:07,498 INFO L495 AbstractCegarLoop]: Abstraction has 1323 states and 4418 transitions. [2022-11-20 12:42:07,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:07,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 4418 transitions. [2022-11-20 12:42:07,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:42:07,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:07,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:42:07,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:07,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:07,711 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:42:07,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:07,711 INFO L85 PathProgramCache]: Analyzing trace with hash -889012814, now seen corresponding path program 1 times [2022-11-20 12:42:07,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:07,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309976615] [2022-11-20 12:42:07,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:07,712 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:07,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:07,712 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:07,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-20 12:42:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:07,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:42:07,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:07,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:07,924 INFO L321 Elim1Store]: treesize reduction 79, result has 27.5 percent of original size [2022-11-20 12:42:07,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 48 [2022-11-20 12:42:08,243 INFO L321 Elim1Store]: treesize reduction 42, result has 26.3 percent of original size [2022-11-20 12:42:08,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 32 [2022-11-20 12:42:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:42:08,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:42:08,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:08,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309976615] [2022-11-20 12:42:08,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309976615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:08,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:08,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:42:08,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038237179] [2022-11-20 12:42:08,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:08,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:08,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:08,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:08,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:08,350 INFO L87 Difference]: Start difference. First operand 1323 states and 4418 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:08,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:08,527 INFO L93 Difference]: Finished difference Result 1329 states and 4432 transitions. [2022-11-20 12:42:08,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:08,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 12:42:08,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:08,534 INFO L225 Difference]: With dead ends: 1329 [2022-11-20 12:42:08,535 INFO L226 Difference]: Without dead ends: 1329 [2022-11-20 12:42:08,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:08,536 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:08,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 44 Unchecked, 0.2s Time] [2022-11-20 12:42:08,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2022-11-20 12:42:08,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1326. [2022-11-20 12:42:08,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 1091 states have (on average 4.058661778185151) internal successors, (4428), 1325 states have internal predecessors, (4428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:08,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 4428 transitions. [2022-11-20 12:42:08,576 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 4428 transitions. Word has length 6 [2022-11-20 12:42:08,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:08,576 INFO L495 AbstractCegarLoop]: Abstraction has 1326 states and 4428 transitions. [2022-11-20 12:42:08,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:08,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 4428 transitions. [2022-11-20 12:42:08,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:42:08,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:08,577 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-20 12:42:08,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:08,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:08,789 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:42:08,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:08,789 INFO L85 PathProgramCache]: Analyzing trace with hash -890352407, now seen corresponding path program 2 times [2022-11-20 12:42:08,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:08,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049260341] [2022-11-20 12:42:08,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:42:08,790 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:08,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:08,791 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:08,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-20 12:42:08,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:42:08,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:42:08,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:42:08,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:09,022 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:42:09,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:42:09,187 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:09,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:42:09,985 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:09,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:09,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049260341] [2022-11-20 12:42:09,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049260341] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:42:09,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:42:09,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-20 12:42:09,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926105244] [2022-11-20 12:42:09,987 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:42:09,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:42:09,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:09,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:42:09,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:42:09,988 INFO L87 Difference]: Start difference. First operand 1326 states and 4428 transitions. Second operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:13,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:42:16,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:42:18,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:42:20,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:42:22,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:42:24,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:42:29,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:29,993 INFO L93 Difference]: Finished difference Result 13087 states and 43917 transitions. [2022-11-20 12:42:29,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:42:29,995 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 12:42:29,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:30,114 INFO L225 Difference]: With dead ends: 13087 [2022-11-20 12:42:30,114 INFO L226 Difference]: Without dead ends: 13087 [2022-11-20 12:42:30,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:42:30,115 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1281 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 97 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:30,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 30 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1279 Invalid, 1 Unknown, 0 Unchecked, 18.2s Time] [2022-11-20 12:42:30,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13087 states. [2022-11-20 12:42:30,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13087 to 1344. [2022-11-20 12:42:30,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1109 states have (on average 4.027051397655545) internal successors, (4466), 1343 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:30,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 4466 transitions. [2022-11-20 12:42:30,278 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 4466 transitions. Word has length 6 [2022-11-20 12:42:30,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:30,279 INFO L495 AbstractCegarLoop]: Abstraction has 1344 states and 4466 transitions. [2022-11-20 12:42:30,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:30,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 4466 transitions. [2022-11-20 12:42:30,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 12:42:30,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:30,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:30,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-20 12:42:30,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:30,492 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:42:30,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:30,492 INFO L85 PathProgramCache]: Analyzing trace with hash -543899636, now seen corresponding path program 1 times [2022-11-20 12:42:30,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:30,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436215385] [2022-11-20 12:42:30,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:30,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:30,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:30,494 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:30,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-20 12:42:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:30,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:42:30,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:30,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:30,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:30,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:30,709 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-20 12:42:30,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-20 12:42:30,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 12:42:30,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:30,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:42:30,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:30,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:42:30,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:30,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436215385] [2022-11-20 12:42:30,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436215385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:30,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:30,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:42:30,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791475] [2022-11-20 12:42:30,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:30,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:42:30,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:30,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:42:30,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:42:30,847 INFO L87 Difference]: Start difference. First operand 1344 states and 4466 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:31,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:31,167 INFO L93 Difference]: Finished difference Result 1355 states and 4502 transitions. [2022-11-20 12:42:31,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:42:31,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 12:42:31,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:31,176 INFO L225 Difference]: With dead ends: 1355 [2022-11-20 12:42:31,176 INFO L226 Difference]: Without dead ends: 1355 [2022-11-20 12:42:31,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:42:31,179 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 3 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:31,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 44 Unchecked, 0.2s Time] [2022-11-20 12:42:31,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2022-11-20 12:42:31,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1355. [2022-11-20 12:42:31,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1120 states have (on average 4.019642857142857) internal successors, (4502), 1354 states have internal predecessors, (4502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:31,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 4502 transitions. [2022-11-20 12:42:31,231 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 4502 transitions. Word has length 7 [2022-11-20 12:42:31,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:31,232 INFO L495 AbstractCegarLoop]: Abstraction has 1355 states and 4502 transitions. [2022-11-20 12:42:31,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:31,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 4502 transitions. [2022-11-20 12:42:31,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 12:42:31,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:31,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:31,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:31,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:31,446 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:42:31,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:31,447 INFO L85 PathProgramCache]: Analyzing trace with hash -543899635, now seen corresponding path program 1 times [2022-11-20 12:42:31,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:31,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065642548] [2022-11-20 12:42:31,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:31,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:31,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:31,449 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:31,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-20 12:42:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:31,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:42:31,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:31,668 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-20 12:42:31,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-20 12:42:31,708 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:42:31,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 12:42:31,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:31,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:42:31,730 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:31,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065642548] [2022-11-20 12:42:31,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065642548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:31,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:31,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:42:31,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328303600] [2022-11-20 12:42:31,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:31,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:31,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:31,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:31,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:31,732 INFO L87 Difference]: Start difference. First operand 1355 states and 4502 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:31,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:31,986 INFO L93 Difference]: Finished difference Result 1290 states and 4312 transitions. [2022-11-20 12:42:31,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:31,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 12:42:31,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:31,993 INFO L225 Difference]: With dead ends: 1290 [2022-11-20 12:42:31,993 INFO L226 Difference]: Without dead ends: 1290 [2022-11-20 12:42:31,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:31,994 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:31,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:42:31,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-11-20 12:42:32,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1290. [2022-11-20 12:42:32,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1084 states have (on average 3.977859778597786) internal successors, (4312), 1289 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:32,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 4312 transitions. [2022-11-20 12:42:32,031 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 4312 transitions. Word has length 7 [2022-11-20 12:42:32,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:32,032 INFO L495 AbstractCegarLoop]: Abstraction has 1290 states and 4312 transitions. [2022-11-20 12:42:32,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:32,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 4312 transitions. [2022-11-20 12:42:32,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 12:42:32,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:32,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:32,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:32,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:32,244 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:42:32,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:32,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1789600416, now seen corresponding path program 1 times [2022-11-20 12:42:32,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:32,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138438631] [2022-11-20 12:42:32,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:32,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:32,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:32,248 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:32,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-20 12:42:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:32,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:42:32,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:32,501 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-20 12:42:32,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-20 12:42:32,527 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:42:32,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 12:42:32,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:42:32,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:42:32,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:32,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138438631] [2022-11-20 12:42:32,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138438631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:32,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:32,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:42:32,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959674654] [2022-11-20 12:42:32,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:32,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:42:32,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:32,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:42:32,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:42:32,553 INFO L87 Difference]: Start difference. First operand 1290 states and 4312 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:32,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:32,787 INFO L93 Difference]: Finished difference Result 891 states and 2905 transitions. [2022-11-20 12:42:32,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:42:32,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 12:42:32,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:32,792 INFO L225 Difference]: With dead ends: 891 [2022-11-20 12:42:32,792 INFO L226 Difference]: Without dead ends: 891 [2022-11-20 12:42:32,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:42:32,793 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 72 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:32,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:42:32,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-11-20 12:42:32,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 891. [2022-11-20 12:42:32,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 781 states have (on average 3.7195902688860434) internal successors, (2905), 890 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:32,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 2905 transitions. [2022-11-20 12:42:32,817 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 2905 transitions. Word has length 7 [2022-11-20 12:42:32,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:32,818 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 2905 transitions. [2022-11-20 12:42:32,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:32,818 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 2905 transitions. [2022-11-20 12:42:32,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 12:42:32,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:32,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:32,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-11-20 12:42:33,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:33,031 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:42:33,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:33,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1789600415, now seen corresponding path program 1 times [2022-11-20 12:42:33,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:33,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87461608] [2022-11-20 12:42:33,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:33,032 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:33,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:33,033 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:33,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-20 12:42:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:33,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 12:42:33,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:33,367 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:42:33,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:42:33,512 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-20 12:42:33,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-20 12:42:33,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:33,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:42:33,657 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:42:33,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:42:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:33,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:42:38,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:38,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:38,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87461608] [2022-11-20 12:42:38,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87461608] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:42:38,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:42:38,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 12:42:38,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569635309] [2022-11-20 12:42:38,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:42:38,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:42:38,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:38,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:42:38,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:42:38,412 INFO L87 Difference]: Start difference. First operand 891 states and 2905 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:39,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:39,005 INFO L93 Difference]: Finished difference Result 903 states and 2930 transitions. [2022-11-20 12:42:39,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:42:39,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 12:42:39,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:39,010 INFO L225 Difference]: With dead ends: 903 [2022-11-20 12:42:39,011 INFO L226 Difference]: Without dead ends: 903 [2022-11-20 12:42:39,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:42:39,012 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:39,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 12 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 130 Unchecked, 0.6s Time] [2022-11-20 12:42:39,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-11-20 12:42:39,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 901. [2022-11-20 12:42:39,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 791 states have (on average 3.7016434892541086) internal successors, (2928), 900 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:39,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 2928 transitions. [2022-11-20 12:42:39,036 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 2928 transitions. Word has length 7 [2022-11-20 12:42:39,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:39,036 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 2928 transitions. [2022-11-20 12:42:39,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:39,037 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 2928 transitions. [2022-11-20 12:42:39,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 12:42:39,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:39,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:39,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:39,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:39,255 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:42:39,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:39,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1790243549, now seen corresponding path program 1 times [2022-11-20 12:42:39,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:39,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333908193] [2022-11-20 12:42:39,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:39,255 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:39,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:39,257 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:39,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-20 12:42:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:39,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:42:39,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:39,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:39,548 INFO L321 Elim1Store]: treesize reduction 79, result has 27.5 percent of original size [2022-11-20 12:42:39,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 48 [2022-11-20 12:42:40,060 INFO L321 Elim1Store]: treesize reduction 42, result has 26.3 percent of original size [2022-11-20 12:42:40,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 32 [2022-11-20 12:42:40,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:42:40,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:42:40,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:40,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333908193] [2022-11-20 12:42:40,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333908193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:40,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:40,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:42:40,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129902175] [2022-11-20 12:42:40,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:40,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:40,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:40,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:40,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:40,267 INFO L87 Difference]: Start difference. First operand 901 states and 2928 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:40,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:40,481 INFO L93 Difference]: Finished difference Result 901 states and 2931 transitions. [2022-11-20 12:42:40,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:40,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 12:42:40,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:40,486 INFO L225 Difference]: With dead ends: 901 [2022-11-20 12:42:40,486 INFO L226 Difference]: Without dead ends: 901 [2022-11-20 12:42:40,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:40,487 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:40,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 41 Unchecked, 0.2s Time] [2022-11-20 12:42:40,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2022-11-20 12:42:40,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 901. [2022-11-20 12:42:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 791 states have (on average 3.7054361567635903) internal successors, (2931), 900 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 2931 transitions. [2022-11-20 12:42:40,518 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 2931 transitions. Word has length 7 [2022-11-20 12:42:40,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:40,519 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 2931 transitions. [2022-11-20 12:42:40,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:40,519 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 2931 transitions. [2022-11-20 12:42:40,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 12:42:40,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:40,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:40,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-11-20 12:42:40,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:40,732 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:42:40,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:40,733 INFO L85 PathProgramCache]: Analyzing trace with hash 318977420, now seen corresponding path program 1 times [2022-11-20 12:42:40,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:40,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498715759] [2022-11-20 12:42:40,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:40,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:40,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:40,734 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:40,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-20 12:42:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:40,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:42:40,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:40,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:40,990 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-20 12:42:40,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-11-20 12:42:41,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 242 [2022-11-20 12:42:41,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:41,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:42:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:41,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:42:41,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:41,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498715759] [2022-11-20 12:42:41,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498715759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:41,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:41,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:42:41,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455776475] [2022-11-20 12:42:41,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:41,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:42:41,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:41,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:42:41,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:42:41,188 INFO L87 Difference]: Start difference. First operand 901 states and 2931 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:41,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:41,396 INFO L93 Difference]: Finished difference Result 905 states and 2949 transitions. [2022-11-20 12:42:41,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:42:41,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 12:42:41,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:41,405 INFO L225 Difference]: With dead ends: 905 [2022-11-20 12:42:41,405 INFO L226 Difference]: Without dead ends: 905 [2022-11-20 12:42:41,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:42:41,408 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 3 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:41,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 39 Unchecked, 0.2s Time] [2022-11-20 12:42:41,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2022-11-20 12:42:41,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 905. [2022-11-20 12:42:41,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 795 states have (on average 3.709433962264151) internal successors, (2949), 904 states have internal predecessors, (2949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:41,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 2949 transitions. [2022-11-20 12:42:41,440 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 2949 transitions. Word has length 8 [2022-11-20 12:42:41,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:41,440 INFO L495 AbstractCegarLoop]: Abstraction has 905 states and 2949 transitions. [2022-11-20 12:42:41,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:41,441 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 2949 transitions. [2022-11-20 12:42:41,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 12:42:41,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:41,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:41,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:41,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:41,653 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:42:41,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:41,654 INFO L85 PathProgramCache]: Analyzing trace with hash -306616003, now seen corresponding path program 1 times [2022-11-20 12:42:41,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:41,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515188609] [2022-11-20 12:42:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:41,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:41,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:41,656 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:41,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-20 12:42:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:41,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 12:42:41,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:41,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:41,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:41,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:41,979 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-20 12:42:41,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-20 12:42:41,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 12:42:42,052 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-20 12:42:42,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 12:42:42,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:42,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:42:42,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:42,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:42,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515188609] [2022-11-20 12:42:42,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515188609] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:42:42,769 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:42:42,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2022-11-20 12:42:42,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57995401] [2022-11-20 12:42:42,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:42:42,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:42:42,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:42,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:42:42,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:42:42,774 INFO L87 Difference]: Start difference. First operand 905 states and 2949 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:43,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:43,586 INFO L93 Difference]: Finished difference Result 1757 states and 5770 transitions. [2022-11-20 12:42:43,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:42:43,587 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 12:42:43,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:43,593 INFO L225 Difference]: With dead ends: 1757 [2022-11-20 12:42:43,594 INFO L226 Difference]: Without dead ends: 1757 [2022-11-20 12:42:43,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:42:43,595 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 76 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 185 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:43,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 10 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 159 Invalid, 0 Unknown, 185 Unchecked, 0.8s Time] [2022-11-20 12:42:43,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2022-11-20 12:42:43,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 947. [2022-11-20 12:42:43,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 840 states have (on average 3.6595238095238094) internal successors, (3074), 946 states have internal predecessors, (3074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:43,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 3074 transitions. [2022-11-20 12:42:43,630 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 3074 transitions. Word has length 8 [2022-11-20 12:42:43,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:43,631 INFO L495 AbstractCegarLoop]: Abstraction has 947 states and 3074 transitions. [2022-11-20 12:42:43,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:43,631 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 3074 transitions. [2022-11-20 12:42:43,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 12:42:43,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:43,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:43,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-11-20 12:42:43,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:43,847 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:42:43,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:43,848 INFO L85 PathProgramCache]: Analyzing trace with hash 356966860, now seen corresponding path program 1 times [2022-11-20 12:42:43,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:43,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332413953] [2022-11-20 12:42:43,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:43,849 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:43,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:43,850 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:43,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-20 12:42:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:44,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:42:44,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:44,121 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-20 12:42:44,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 52 [2022-11-20 12:42:44,373 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2022-11-20 12:42:44,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 68 [2022-11-20 12:42:44,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:42:44,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:42:44,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:44,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332413953] [2022-11-20 12:42:44,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332413953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:44,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:44,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:42:44,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821900614] [2022-11-20 12:42:44,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:44,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:42:44,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:44,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:42:44,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:42:44,830 INFO L87 Difference]: Start difference. First operand 947 states and 3074 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:44,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:44,999 INFO L93 Difference]: Finished difference Result 950 states and 3080 transitions. [2022-11-20 12:42:45,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:42:45,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 12:42:45,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:45,002 INFO L225 Difference]: With dead ends: 950 [2022-11-20 12:42:45,002 INFO L226 Difference]: Without dead ends: 950 [2022-11-20 12:42:45,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:42:45,003 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:45,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 71 Unchecked, 0.2s Time] [2022-11-20 12:42:45,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2022-11-20 12:42:45,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 947. [2022-11-20 12:42:45,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 840 states have (on average 3.6619047619047618) internal successors, (3076), 946 states have internal predecessors, (3076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:45,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 3076 transitions. [2022-11-20 12:42:45,027 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 3076 transitions. Word has length 8 [2022-11-20 12:42:45,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:45,027 INFO L495 AbstractCegarLoop]: Abstraction has 947 states and 3076 transitions. [2022-11-20 12:42:45,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:45,028 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 3076 transitions. [2022-11-20 12:42:45,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 12:42:45,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:45,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:45,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:45,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:45,240 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:42:45,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:45,241 INFO L85 PathProgramCache]: Analyzing trace with hash 356966558, now seen corresponding path program 1 times [2022-11-20 12:42:45,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:45,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678805091] [2022-11-20 12:42:45,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:45,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:45,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:45,242 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:45,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-20 12:42:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:45,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 12:42:45,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:45,555 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:42:45,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:42:45,717 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-20 12:42:45,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-20 12:42:45,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:45,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:42:45,906 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:42:45,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:42:46,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:46,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:42:51,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:51,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:51,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678805091] [2022-11-20 12:42:51,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678805091] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:42:51,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:42:51,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 12:42:51,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58730738] [2022-11-20 12:42:51,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:42:51,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:42:51,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:51,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:42:51,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:42:51,941 INFO L87 Difference]: Start difference. First operand 947 states and 3076 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:52,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:52,442 INFO L93 Difference]: Finished difference Result 960 states and 3100 transitions. [2022-11-20 12:42:52,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:42:52,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 12:42:52,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:52,445 INFO L225 Difference]: With dead ends: 960 [2022-11-20 12:42:52,445 INFO L226 Difference]: Without dead ends: 960 [2022-11-20 12:42:52,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:42:52,446 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:52,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 10 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 85 Unchecked, 0.5s Time] [2022-11-20 12:42:52,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-11-20 12:42:52,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 952. [2022-11-20 12:42:52,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 845 states have (on average 3.6568047337278107) internal successors, (3090), 951 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:52,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 3090 transitions. [2022-11-20 12:42:52,473 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 3090 transitions. Word has length 8 [2022-11-20 12:42:52,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:52,473 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 3090 transitions. [2022-11-20 12:42:52,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:52,473 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 3090 transitions. [2022-11-20 12:42:52,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 12:42:52,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:52,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:52,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:52,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:52,687 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:42:52,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:52,688 INFO L85 PathProgramCache]: Analyzing trace with hash 356967759, now seen corresponding path program 1 times [2022-11-20 12:42:52,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:52,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893285968] [2022-11-20 12:42:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:52,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:52,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:52,690 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:52,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-20 12:42:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:52,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:42:52,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:53,018 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-20 12:42:53,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 52 [2022-11-20 12:42:53,317 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2022-11-20 12:42:53,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 68 [2022-11-20 12:42:53,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:42:53,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:42:53,784 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:53,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893285968] [2022-11-20 12:42:53,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893285968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:53,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:53,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:42:53,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942219187] [2022-11-20 12:42:53,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:53,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:42:53,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:53,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:42:53,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:42:53,786 INFO L87 Difference]: Start difference. First operand 952 states and 3090 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:53,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:53,978 INFO L93 Difference]: Finished difference Result 956 states and 3095 transitions. [2022-11-20 12:42:53,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:42:53,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 12:42:53,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:53,982 INFO L225 Difference]: With dead ends: 956 [2022-11-20 12:42:53,982 INFO L226 Difference]: Without dead ends: 956 [2022-11-20 12:42:53,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:42:53,982 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:53,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 70 Unchecked, 0.2s Time] [2022-11-20 12:42:53,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2022-11-20 12:42:53,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 953. [2022-11-20 12:42:54,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 846 states have (on average 3.6536643026004727) internal successors, (3091), 952 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:54,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 3091 transitions. [2022-11-20 12:42:54,005 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 3091 transitions. Word has length 8 [2022-11-20 12:42:54,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:54,005 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 3091 transitions. [2022-11-20 12:42:54,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:54,006 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 3091 transitions. [2022-11-20 12:42:54,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 12:42:54,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:54,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:54,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:54,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:54,218 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:42:54,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:54,219 INFO L85 PathProgramCache]: Analyzing trace with hash 337017872, now seen corresponding path program 1 times [2022-11-20 12:42:54,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:54,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425093704] [2022-11-20 12:42:54,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:54,219 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:54,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:54,220 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:54,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-20 12:42:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:54,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 12:42:54,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:54,636 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:42:54,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:42:54,799 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-20 12:42:54,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-20 12:42:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:55,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:42:57,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:57,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:57,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425093704] [2022-11-20 12:42:57,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425093704] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:42:57,469 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:42:57,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-20 12:42:57,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657475199] [2022-11-20 12:42:57,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:42:57,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:42:57,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:57,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:42:57,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:42:57,470 INFO L87 Difference]: Start difference. First operand 953 states and 3091 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:58,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:58,001 INFO L93 Difference]: Finished difference Result 972 states and 3130 transitions. [2022-11-20 12:42:58,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:42:58,002 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 12:42:58,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:58,004 INFO L225 Difference]: With dead ends: 972 [2022-11-20 12:42:58,004 INFO L226 Difference]: Without dead ends: 972 [2022-11-20 12:42:58,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:42:58,005 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 11 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 222 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:58,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 24 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 222 Unchecked, 0.5s Time] [2022-11-20 12:42:58,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2022-11-20 12:42:58,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 965. [2022-11-20 12:42:58,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 858 states have (on average 3.6386946386946386) internal successors, (3122), 964 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:58,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 3122 transitions. [2022-11-20 12:42:58,029 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 3122 transitions. Word has length 8 [2022-11-20 12:42:58,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:58,029 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 3122 transitions. [2022-11-20 12:42:58,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:58,029 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 3122 transitions. [2022-11-20 12:42:58,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 12:42:58,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:58,030 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:58,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:58,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:58,239 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:42:58,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:58,239 INFO L85 PathProgramCache]: Analyzing trace with hash -888494392, now seen corresponding path program 1 times [2022-11-20 12:42:58,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:58,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721747759] [2022-11-20 12:42:58,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:58,240 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:58,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:58,241 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:58,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-20 12:42:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:58,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 12:42:58,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:58,627 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:42:58,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:42:58,832 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-20 12:42:58,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-20 12:42:59,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:59,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-11-20 12:42:59,120 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:42:59,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:42:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:59,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:03,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:03,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721747759] [2022-11-20 12:43:03,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721747759] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:43:03,004 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:43:03,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-20 12:43:03,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081521390] [2022-11-20 12:43:03,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:43:03,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:43:03,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:03,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:43:03,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:43:03,005 INFO L87 Difference]: Start difference. First operand 965 states and 3122 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:04,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:04,653 INFO L93 Difference]: Finished difference Result 972 states and 3134 transitions. [2022-11-20 12:43:04,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:43:04,654 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 12:43:04,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:04,657 INFO L225 Difference]: With dead ends: 972 [2022-11-20 12:43:04,657 INFO L226 Difference]: Without dead ends: 972 [2022-11-20 12:43:04,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:43:04,658 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:04,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 124 Unchecked, 0.5s Time] [2022-11-20 12:43:04,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2022-11-20 12:43:04,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 969. [2022-11-20 12:43:04,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 862 states have (on average 3.6310904872389793) internal successors, (3130), 968 states have internal predecessors, (3130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:04,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 3130 transitions. [2022-11-20 12:43:04,682 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 3130 transitions. Word has length 8 [2022-11-20 12:43:04,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:04,682 INFO L495 AbstractCegarLoop]: Abstraction has 969 states and 3130 transitions. [2022-11-20 12:43:04,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:04,683 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 3130 transitions. [2022-11-20 12:43:04,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 12:43:04,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:04,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:04,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-20 12:43:04,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:04,891 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:43:04,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:04,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1298488629, now seen corresponding path program 1 times [2022-11-20 12:43:04,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:43:04,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1629663220] [2022-11-20 12:43:04,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:04,891 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:04,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:43:04,892 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:43:04,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-20 12:43:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:05,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:43:05,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:05,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:05,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:43:05,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:05,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1629663220] [2022-11-20 12:43:05,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1629663220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:05,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:05,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:43:05,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968690915] [2022-11-20 12:43:05,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:05,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:43:05,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:05,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:43:05,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:43:05,049 INFO L87 Difference]: Start difference. First operand 969 states and 3130 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:05,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:05,345 INFO L93 Difference]: Finished difference Result 774 states and 2370 transitions. [2022-11-20 12:43:05,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:43:05,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 12:43:05,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:05,348 INFO L225 Difference]: With dead ends: 774 [2022-11-20 12:43:05,348 INFO L226 Difference]: Without dead ends: 770 [2022-11-20 12:43:05,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:43:05,348 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:05,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:43:05,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-11-20 12:43:05,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 770. [2022-11-20 12:43:05,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 702 states have (on average 3.364672364672365) internal successors, (2362), 769 states have internal predecessors, (2362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:05,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 2362 transitions. [2022-11-20 12:43:05,362 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 2362 transitions. Word has length 9 [2022-11-20 12:43:05,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:05,362 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 2362 transitions. [2022-11-20 12:43:05,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:05,363 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 2362 transitions. [2022-11-20 12:43:05,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 12:43:05,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:05,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:05,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:05,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:05,575 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:43:05,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:05,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1818927048, now seen corresponding path program 1 times [2022-11-20 12:43:05,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:43:05,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552790959] [2022-11-20 12:43:05,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:05,576 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:05,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:43:05,577 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:43:05,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-20 12:43:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:05,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:43:05,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:05,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:05,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:06,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:06,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:06,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552790959] [2022-11-20 12:43:06,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552790959] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:43:06,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:43:06,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-20 12:43:06,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573920290] [2022-11-20 12:43:06,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:43:06,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:43:06,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:06,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:43:06,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:43:06,187 INFO L87 Difference]: Start difference. First operand 770 states and 2362 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:06,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:06,925 INFO L93 Difference]: Finished difference Result 774 states and 2365 transitions. [2022-11-20 12:43:06,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:43:06,925 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 12:43:06,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:06,928 INFO L225 Difference]: With dead ends: 774 [2022-11-20 12:43:06,928 INFO L226 Difference]: Without dead ends: 774 [2022-11-20 12:43:06,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:43:06,928 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:06,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 13 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 180 Invalid, 0 Unknown, 44 Unchecked, 0.7s Time] [2022-11-20 12:43:06,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2022-11-20 12:43:06,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 770. [2022-11-20 12:43:06,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 702 states have (on average 3.3618233618233617) internal successors, (2360), 769 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:06,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 2360 transitions. [2022-11-20 12:43:06,945 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 2360 transitions. Word has length 9 [2022-11-20 12:43:06,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:06,946 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 2360 transitions. [2022-11-20 12:43:06,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:06,946 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 2360 transitions. [2022-11-20 12:43:06,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 12:43:06,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:06,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:06,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-20 12:43:07,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:07,167 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:43:07,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:07,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1818940432, now seen corresponding path program 1 times [2022-11-20 12:43:07,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:43:07,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380242754] [2022-11-20 12:43:07,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:07,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:07,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:43:07,169 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:43:07,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-20 12:43:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:07,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 12:43:07,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:07,510 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:43:07,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:43:07,688 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-20 12:43:07,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-20 12:43:07,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:43:07,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:43:07,875 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:43:07,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:43:07,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:07,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:11,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:11,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:11,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380242754] [2022-11-20 12:43:11,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380242754] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:43:11,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:43:11,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 12:43:11,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652199517] [2022-11-20 12:43:11,348 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:43:11,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:43:11,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:11,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:43:11,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:43:11,349 INFO L87 Difference]: Start difference. First operand 770 states and 2360 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:11,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:11,593 INFO L93 Difference]: Finished difference Result 785 states and 2397 transitions. [2022-11-20 12:43:11,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:43:11,594 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 12:43:11,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:11,596 INFO L225 Difference]: With dead ends: 785 [2022-11-20 12:43:11,596 INFO L226 Difference]: Without dead ends: 785 [2022-11-20 12:43:11,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:43:11,597 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:11,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 8 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 113 Unchecked, 0.2s Time] [2022-11-20 12:43:11,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2022-11-20 12:43:11,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2022-11-20 12:43:11,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 707 states have (on average 3.366336633663366) internal successors, (2380), 774 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:11,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2380 transitions. [2022-11-20 12:43:11,615 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 2380 transitions. Word has length 9 [2022-11-20 12:43:11,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:11,616 INFO L495 AbstractCegarLoop]: Abstraction has 775 states and 2380 transitions. [2022-11-20 12:43:11,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:11,616 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2380 transitions. [2022-11-20 12:43:11,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 12:43:11,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:11,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:11,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-20 12:43:11,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:11,830 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:43:11,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:11,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1811510319, now seen corresponding path program 1 times [2022-11-20 12:43:11,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:43:11,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201204123] [2022-11-20 12:43:11,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:11,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:11,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:43:11,832 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:43:11,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-20 12:43:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:11,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:43:11,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:43:11,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:43:11,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:11,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201204123] [2022-11-20 12:43:11,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201204123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:11,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:11,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:43:11,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244706897] [2022-11-20 12:43:11,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:11,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:43:11,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:11,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:43:11,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:43:11,997 INFO L87 Difference]: Start difference. First operand 775 states and 2380 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:12,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:12,397 INFO L93 Difference]: Finished difference Result 801 states and 2413 transitions. [2022-11-20 12:43:12,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:43:12,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 12:43:12,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:12,400 INFO L225 Difference]: With dead ends: 801 [2022-11-20 12:43:12,400 INFO L226 Difference]: Without dead ends: 801 [2022-11-20 12:43:12,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:43:12,401 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:12,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:43:12,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-11-20 12:43:12,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 799. [2022-11-20 12:43:12,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 723 states have (on average 3.3374827109266945) internal successors, (2413), 798 states have internal predecessors, (2413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:12,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 2413 transitions. [2022-11-20 12:43:12,416 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 2413 transitions. Word has length 9 [2022-11-20 12:43:12,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:12,416 INFO L495 AbstractCegarLoop]: Abstraction has 799 states and 2413 transitions. [2022-11-20 12:43:12,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:12,416 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 2413 transitions. [2022-11-20 12:43:12,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 12:43:12,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:12,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:12,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:12,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:12,618 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:43:12,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:12,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1857624317, now seen corresponding path program 1 times [2022-11-20 12:43:12,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:43:12,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594434602] [2022-11-20 12:43:12,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:12,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:12,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:43:12,620 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:43:12,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-20 12:43:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:12,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:43:12,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:12,921 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-20 12:43:12,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 52 [2022-11-20 12:43:12,985 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:43:12,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-20 12:43:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:43:13,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:43:13,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:13,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594434602] [2022-11-20 12:43:13,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594434602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:13,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:13,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:43:13,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458550916] [2022-11-20 12:43:13,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:13,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:43:13,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:13,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:43:13,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:43:13,121 INFO L87 Difference]: Start difference. First operand 799 states and 2413 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:13,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:13,382 INFO L93 Difference]: Finished difference Result 796 states and 2400 transitions. [2022-11-20 12:43:13,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:43:13,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 12:43:13,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:13,384 INFO L225 Difference]: With dead ends: 796 [2022-11-20 12:43:13,384 INFO L226 Difference]: Without dead ends: 796 [2022-11-20 12:43:13,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:43:13,385 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:13,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 38 Unchecked, 0.3s Time] [2022-11-20 12:43:13,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-11-20 12:43:13,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 795. [2022-11-20 12:43:13,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 719 states have (on average 3.3310152990264257) internal successors, (2395), 794 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:13,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 2395 transitions. [2022-11-20 12:43:13,403 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 2395 transitions. Word has length 9 [2022-11-20 12:43:13,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:13,404 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 2395 transitions. [2022-11-20 12:43:13,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:13,404 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 2395 transitions. [2022-11-20 12:43:13,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 12:43:13,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:13,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:13,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:13,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:13,618 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:43:13,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:13,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1857624015, now seen corresponding path program 1 times [2022-11-20 12:43:13,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:43:13,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808714174] [2022-11-20 12:43:13,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:13,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:13,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:43:13,620 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:43:13,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-20 12:43:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:13,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 12:43:13,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:14,063 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:43:14,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:43:14,279 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-20 12:43:14,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-20 12:43:14,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:43:14,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:43:14,491 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:43:14,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:43:14,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:43:14,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:18,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:43:18,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:18,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808714174] [2022-11-20 12:43:18,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808714174] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:43:18,275 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:43:18,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 12:43:18,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949474094] [2022-11-20 12:43:18,275 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:43:18,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:43:18,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:18,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:43:18,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:43:18,276 INFO L87 Difference]: Start difference. First operand 795 states and 2395 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:18,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:18,678 INFO L93 Difference]: Finished difference Result 839 states and 2491 transitions. [2022-11-20 12:43:18,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:43:18,679 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 12:43:18,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:18,682 INFO L225 Difference]: With dead ends: 839 [2022-11-20 12:43:18,682 INFO L226 Difference]: Without dead ends: 839 [2022-11-20 12:43:18,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:43:18,683 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:18,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 8 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 123 Unchecked, 0.4s Time] [2022-11-20 12:43:18,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2022-11-20 12:43:18,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 829. [2022-11-20 12:43:18,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 753 states have (on average 3.2868525896414345) internal successors, (2475), 828 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:18,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 2475 transitions. [2022-11-20 12:43:18,703 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 2475 transitions. Word has length 9 [2022-11-20 12:43:18,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:18,703 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 2475 transitions. [2022-11-20 12:43:18,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:18,704 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 2475 transitions. [2022-11-20 12:43:18,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 12:43:18,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:18,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:18,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:18,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:18,911 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:43:18,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:18,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1857625216, now seen corresponding path program 1 times [2022-11-20 12:43:18,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:43:18,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306610272] [2022-11-20 12:43:18,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:18,911 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:18,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:43:18,912 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:43:18,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-20 12:43:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:43:19,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:19,232 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-20 12:43:19,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 52 [2022-11-20 12:43:19,536 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2022-11-20 12:43:19,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 68 [2022-11-20 12:43:20,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:43:20,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:43:20,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:20,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306610272] [2022-11-20 12:43:20,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306610272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:20,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:20,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:43:20,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682958292] [2022-11-20 12:43:20,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:20,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:43:20,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:20,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:43:20,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:43:20,079 INFO L87 Difference]: Start difference. First operand 829 states and 2475 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:20,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:20,259 INFO L93 Difference]: Finished difference Result 831 states and 2477 transitions. [2022-11-20 12:43:20,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:43:20,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 12:43:20,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:20,261 INFO L225 Difference]: With dead ends: 831 [2022-11-20 12:43:20,261 INFO L226 Difference]: Without dead ends: 831 [2022-11-20 12:43:20,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:43:20,262 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:20,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 97 Unchecked, 0.2s Time] [2022-11-20 12:43:20,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2022-11-20 12:43:20,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 830. [2022-11-20 12:43:20,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 754 states have (on average 3.283819628647215) internal successors, (2476), 829 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:20,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 2476 transitions. [2022-11-20 12:43:20,279 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 2476 transitions. Word has length 9 [2022-11-20 12:43:20,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:20,280 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 2476 transitions. [2022-11-20 12:43:20,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:20,280 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 2476 transitions. [2022-11-20 12:43:20,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 12:43:20,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:20,281 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:20,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:20,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:20,487 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:43:20,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:20,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1773520808, now seen corresponding path program 1 times [2022-11-20 12:43:20,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:43:20,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641528089] [2022-11-20 12:43:20,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:20,488 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:20,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:43:20,489 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:43:20,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-20 12:43:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:20,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 12:43:20,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:20,896 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:43:20,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:43:21,097 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-20 12:43:21,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-20 12:43:21,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:43:21,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-20 12:43:21,391 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:43:21,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:43:21,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:21,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:27,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:27,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:27,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641528089] [2022-11-20 12:43:27,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641528089] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:43:27,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:43:27,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-20 12:43:27,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825170885] [2022-11-20 12:43:27,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:43:27,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:43:27,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:27,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:43:27,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:43:27,383 INFO L87 Difference]: Start difference. First operand 830 states and 2476 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:29,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:29,885 INFO L93 Difference]: Finished difference Result 835 states and 2486 transitions. [2022-11-20 12:43:29,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:43:29,886 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 12:43:29,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:29,888 INFO L225 Difference]: With dead ends: 835 [2022-11-20 12:43:29,888 INFO L226 Difference]: Without dead ends: 835 [2022-11-20 12:43:29,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:43:29,889 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:29,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 14 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 141 Invalid, 0 Unknown, 145 Unchecked, 0.8s Time] [2022-11-20 12:43:29,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-11-20 12:43:29,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 832. [2022-11-20 12:43:29,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 756 states have (on average 3.2830687830687832) internal successors, (2482), 831 states have internal predecessors, (2482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:29,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 2482 transitions. [2022-11-20 12:43:29,902 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 2482 transitions. Word has length 9 [2022-11-20 12:43:29,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:29,902 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 2482 transitions. [2022-11-20 12:43:29,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:29,902 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 2482 transitions. [2022-11-20 12:43:29,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 12:43:29,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:29,903 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:29,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-11-20 12:43:30,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:30,103 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:43:30,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:30,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1773520891, now seen corresponding path program 1 times [2022-11-20 12:43:30,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:43:30,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209047353] [2022-11-20 12:43:30,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:30,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:30,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:43:30,106 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:43:30,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-20 12:43:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:30,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 12:43:30,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:30,494 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:43:30,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:43:30,687 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-20 12:43:30,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-20 12:43:30,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:43:30,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-20 12:43:30,935 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:43:30,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:43:31,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:31,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:35,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:35,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:35,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209047353] [2022-11-20 12:43:35,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209047353] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:43:35,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:43:35,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-20 12:43:35,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955432864] [2022-11-20 12:43:35,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:43:35,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:43:35,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:35,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:43:35,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:43:35,553 INFO L87 Difference]: Start difference. First operand 832 states and 2482 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:37,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:37,081 INFO L93 Difference]: Finished difference Result 839 states and 2494 transitions. [2022-11-20 12:43:37,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:43:37,082 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 12:43:37,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:37,084 INFO L225 Difference]: With dead ends: 839 [2022-11-20 12:43:37,084 INFO L226 Difference]: Without dead ends: 839 [2022-11-20 12:43:37,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:43:37,085 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:37,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 140 Unchecked, 0.4s Time] [2022-11-20 12:43:37,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2022-11-20 12:43:37,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 834. [2022-11-20 12:43:37,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 758 states have (on average 3.2810026385224274) internal successors, (2487), 833 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:37,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 2487 transitions. [2022-11-20 12:43:37,097 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 2487 transitions. Word has length 9 [2022-11-20 12:43:37,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:37,097 INFO L495 AbstractCegarLoop]: Abstraction has 834 states and 2487 transitions. [2022-11-20 12:43:37,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:37,098 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 2487 transitions. [2022-11-20 12:43:37,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 12:43:37,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:37,098 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:37,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-11-20 12:43:37,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:37,299 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:43:37,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:37,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1793469577, now seen corresponding path program 1 times [2022-11-20 12:43:37,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:43:37,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675387570] [2022-11-20 12:43:37,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:37,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:37,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:43:37,301 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:43:37,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-20 12:43:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:37,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 12:43:37,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:37,700 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:43:37,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:43:37,905 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-20 12:43:37,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-20 12:43:38,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:43:38,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-20 12:43:38,208 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:43:38,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:43:38,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:43:38,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:40,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:43:40,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:40,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675387570] [2022-11-20 12:43:40,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675387570] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:43:40,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:43:40,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-20 12:43:40,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125596542] [2022-11-20 12:43:40,636 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:43:40,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:43:40,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:40,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:43:40,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:43:40,637 INFO L87 Difference]: Start difference. First operand 834 states and 2487 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:41,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:41,953 INFO L93 Difference]: Finished difference Result 850 states and 2521 transitions. [2022-11-20 12:43:41,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:43:41,954 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 12:43:41,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:41,956 INFO L225 Difference]: With dead ends: 850 [2022-11-20 12:43:41,956 INFO L226 Difference]: Without dead ends: 850 [2022-11-20 12:43:41,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:43:41,957 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:41,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 140 Unchecked, 0.5s Time] [2022-11-20 12:43:41,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-11-20 12:43:41,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 850. [2022-11-20 12:43:41,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 774 states have (on average 3.257105943152455) internal successors, (2521), 849 states have internal predecessors, (2521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:41,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 2521 transitions. [2022-11-20 12:43:41,973 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 2521 transitions. Word has length 9 [2022-11-20 12:43:41,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:41,973 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 2521 transitions. [2022-11-20 12:43:41,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:41,974 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 2521 transitions. [2022-11-20 12:43:41,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 12:43:41,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:41,975 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:41,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:42,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:42,176 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:43:42,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:42,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1275985249, now seen corresponding path program 2 times [2022-11-20 12:43:42,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:43:42,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134607502] [2022-11-20 12:43:42,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:43:42,177 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:42,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:43:42,179 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:43:42,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-20 12:43:42,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:43:42,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:43:42,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 12:43:42,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:42,544 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:43:42,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:43:42,735 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-20 12:43:42,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-20 12:43:42,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:43:42,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:43:42,902 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:43:42,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:43:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:43:42,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:43:42,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:42,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134607502] [2022-11-20 12:43:42,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134607502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:42,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:42,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:43:42,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681941159] [2022-11-20 12:43:42,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:42,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:43:42,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:42,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:43:42,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:43:42,980 INFO L87 Difference]: Start difference. First operand 850 states and 2521 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:43,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:43,428 INFO L93 Difference]: Finished difference Result 537 states and 1509 transitions. [2022-11-20 12:43:43,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:43:43,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 12:43:43,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:43,431 INFO L225 Difference]: With dead ends: 537 [2022-11-20 12:43:43,431 INFO L226 Difference]: Without dead ends: 537 [2022-11-20 12:43:43,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:43:43,431 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 30 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:43,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 2 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:43:43,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-20 12:43:43,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 455. [2022-11-20 12:43:43,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 428 states have (on average 3.074766355140187) internal successors, (1316), 454 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:43,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 1316 transitions. [2022-11-20 12:43:43,443 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 1316 transitions. Word has length 9 [2022-11-20 12:43:43,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:43,443 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 1316 transitions. [2022-11-20 12:43:43,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:43,443 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 1316 transitions. [2022-11-20 12:43:43,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 12:43:43,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:43,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:43,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:43,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:43,658 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:43:43,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:43,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1598440764, now seen corresponding path program 1 times [2022-11-20 12:43:43,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:43:43,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601787656] [2022-11-20 12:43:43,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:43,659 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:43,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:43:43,660 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:43:43,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-20 12:43:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:43,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:43:43,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:43,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:43,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:43:43,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:43,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601787656] [2022-11-20 12:43:43,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601787656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:43,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:43,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:43:43,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622771483] [2022-11-20 12:43:43,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:43,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:43:43,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:43,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:43:43,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:43:43,857 INFO L87 Difference]: Start difference. First operand 455 states and 1316 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:44,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:44,246 INFO L93 Difference]: Finished difference Result 482 states and 1374 transitions. [2022-11-20 12:43:44,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:43:44,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 12:43:44,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:44,248 INFO L225 Difference]: With dead ends: 482 [2022-11-20 12:43:44,248 INFO L226 Difference]: Without dead ends: 453 [2022-11-20 12:43:44,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:43:44,248 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:44,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:43:44,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-11-20 12:43:44,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 445. [2022-11-20 12:43:44,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 416 states have (on average 3.110576923076923) internal successors, (1294), 444 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:44,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1294 transitions. [2022-11-20 12:43:44,260 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1294 transitions. Word has length 10 [2022-11-20 12:43:44,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:44,261 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 1294 transitions. [2022-11-20 12:43:44,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:44,261 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1294 transitions. [2022-11-20 12:43:44,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 12:43:44,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:44,262 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:44,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:44,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:44,467 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:43:44,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:44,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1144453347, now seen corresponding path program 2 times [2022-11-20 12:43:44,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:43:44,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876974721] [2022-11-20 12:43:44,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:43:44,467 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:44,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:43:44,468 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:43:44,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-20 12:43:44,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:43:44,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:43:44,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:43:44,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:44,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:43:44,820 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-20 12:43:44,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-11-20 12:43:44,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 126 [2022-11-20 12:43:44,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:43:44,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:43:45,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:43:45,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:43:45,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:45,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876974721] [2022-11-20 12:43:45,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876974721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:45,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:45,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:43:45,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668552771] [2022-11-20 12:43:45,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:45,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:43:45,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:45,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:43:45,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:43:45,117 INFO L87 Difference]: Start difference. First operand 445 states and 1294 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:45,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:45,388 INFO L93 Difference]: Finished difference Result 441 states and 1282 transitions. [2022-11-20 12:43:45,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:43:45,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 12:43:45,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:45,390 INFO L225 Difference]: With dead ends: 441 [2022-11-20 12:43:45,390 INFO L226 Difference]: Without dead ends: 441 [2022-11-20 12:43:45,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:43:45,391 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 3 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:45,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 34 Unchecked, 0.2s Time] [2022-11-20 12:43:45,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-11-20 12:43:45,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2022-11-20 12:43:45,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 412 states have (on average 3.1116504854368934) internal successors, (1282), 440 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:45,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1282 transitions. [2022-11-20 12:43:45,401 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 1282 transitions. Word has length 10 [2022-11-20 12:43:45,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:45,402 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 1282 transitions. [2022-11-20 12:43:45,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:45,402 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1282 transitions. [2022-11-20 12:43:45,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 12:43:45,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:45,403 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1] [2022-11-20 12:43:45,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:45,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:45,616 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:43:45,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:45,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1165306768, now seen corresponding path program 1 times [2022-11-20 12:43:45,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:43:45,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808280023] [2022-11-20 12:43:45,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:45,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:45,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:43:45,617 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:43:45,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-20 12:43:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:45,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 12:43:45,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:45,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:43:46,251 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:46,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:48,611 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:48,611 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:48,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808280023] [2022-11-20 12:43:48,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808280023] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:43:48,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:43:48,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-20 12:43:48,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978232774] [2022-11-20 12:43:48,612 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:43:48,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:43:48,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:48,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:43:48,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:43:48,614 INFO L87 Difference]: Start difference. First operand 441 states and 1282 transitions. Second operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:54,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:43:55,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:43:57,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:43:59,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:44:01,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:44:03,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:44:05,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:44:19,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:19,607 INFO L93 Difference]: Finished difference Result 5702 states and 17331 transitions. [2022-11-20 12:44:19,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:44:19,609 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 12:44:19,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:19,623 INFO L225 Difference]: With dead ends: 5702 [2022-11-20 12:44:19,623 INFO L226 Difference]: Without dead ends: 5702 [2022-11-20 12:44:19,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2022-11-20 12:44:19,624 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2208 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 133 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2208 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:19,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2208 Valid, 71 Invalid, 2418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2279 Invalid, 6 Unknown, 0 Unchecked, 24.8s Time] [2022-11-20 12:44:19,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5702 states. [2022-11-20 12:44:19,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5702 to 453. [2022-11-20 12:44:19,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 424 states have (on average 3.0754716981132075) internal successors, (1304), 452 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 1304 transitions. [2022-11-20 12:44:19,668 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 1304 transitions. Word has length 10 [2022-11-20 12:44:19,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:19,668 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 1304 transitions. [2022-11-20 12:44:19,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:19,668 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 1304 transitions. [2022-11-20 12:44:19,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 12:44:19,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:19,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:19,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-11-20 12:44:19,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:19,883 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:44:19,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:19,884 INFO L85 PathProgramCache]: Analyzing trace with hash -552202586, now seen corresponding path program 1 times [2022-11-20 12:44:19,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:19,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600833205] [2022-11-20 12:44:19,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:19,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:19,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:19,886 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:44:19,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-20 12:44:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:20,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 12:44:20,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:20,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:20,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:20,358 INFO L321 Elim1Store]: treesize reduction 72, result has 30.8 percent of original size [2022-11-20 12:44:20,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 88 [2022-11-20 12:44:20,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:20,534 INFO L321 Elim1Store]: treesize reduction 66, result has 29.8 percent of original size [2022-11-20 12:44:20,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 40 [2022-11-20 12:44:20,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:20,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:20,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:20,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 24 [2022-11-20 12:44:20,826 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:44:20,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:44:21,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:44:21,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:44:24,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:44:24,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:24,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600833205] [2022-11-20 12:44:24,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [600833205] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:44:24,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:44:24,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 7 [2022-11-20 12:44:24,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632380511] [2022-11-20 12:44:24,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:44:24,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:44:24,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:24,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:44:24,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:44:24,172 INFO L87 Difference]: Start difference. First operand 453 states and 1304 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:24,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:24,387 INFO L93 Difference]: Finished difference Result 470 states and 1353 transitions. [2022-11-20 12:44:24,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:44:24,387 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 12:44:24,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:24,388 INFO L225 Difference]: With dead ends: 470 [2022-11-20 12:44:24,388 INFO L226 Difference]: Without dead ends: 470 [2022-11-20 12:44:24,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:44:24,389 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:24,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 50 Unchecked, 0.2s Time] [2022-11-20 12:44:24,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-11-20 12:44:24,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 464. [2022-11-20 12:44:24,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 435 states have (on average 3.066666666666667) internal successors, (1334), 463 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:24,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1334 transitions. [2022-11-20 12:44:24,400 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1334 transitions. Word has length 10 [2022-11-20 12:44:24,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:24,400 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 1334 transitions. [2022-11-20 12:44:24,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:24,400 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1334 transitions. [2022-11-20 12:44:24,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 12:44:24,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:24,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:24,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:24,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:24,616 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:44:24,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:24,616 INFO L85 PathProgramCache]: Analyzing trace with hash -552572757, now seen corresponding path program 1 times [2022-11-20 12:44:24,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:24,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391702294] [2022-11-20 12:44:24,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:24,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:24,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:24,617 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:44:24,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-20 12:44:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:24,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:44:24,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:24,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:24,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:24,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:24,953 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-20 12:44:24,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-20 12:44:24,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 12:44:25,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:25,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:44:25,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:44:25,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:44:25,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:25,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391702294] [2022-11-20 12:44:25,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391702294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:25,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:25,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:44:25,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159692328] [2022-11-20 12:44:25,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:25,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:44:25,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:25,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:44:25,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:44:25,165 INFO L87 Difference]: Start difference. First operand 464 states and 1334 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:25,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:25,442 INFO L93 Difference]: Finished difference Result 467 states and 1338 transitions. [2022-11-20 12:44:25,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:44:25,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 12:44:25,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:25,444 INFO L225 Difference]: With dead ends: 467 [2022-11-20 12:44:25,444 INFO L226 Difference]: Without dead ends: 467 [2022-11-20 12:44:25,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:44:25,445 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:25,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 34 Unchecked, 0.2s Time] [2022-11-20 12:44:25,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-11-20 12:44:25,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2022-11-20 12:44:25,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 438 states have (on average 3.0547945205479454) internal successors, (1338), 466 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:25,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 1338 transitions. [2022-11-20 12:44:25,452 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 1338 transitions. Word has length 10 [2022-11-20 12:44:25,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:25,452 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 1338 transitions. [2022-11-20 12:44:25,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:25,452 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 1338 transitions. [2022-11-20 12:44:25,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 12:44:25,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:25,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:25,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:25,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:25,653 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:44:25,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:25,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1751781159, now seen corresponding path program 1 times [2022-11-20 12:44:25,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:25,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683139792] [2022-11-20 12:44:25,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:25,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:25,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:25,655 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:44:25,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-20 12:44:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:25,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:44:25,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:26,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:44:26,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:44:26,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:44:26,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:26,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683139792] [2022-11-20 12:44:26,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683139792] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:44:26,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:44:26,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-20 12:44:26,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781130537] [2022-11-20 12:44:26,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:44:26,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:44:26,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:26,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:44:26,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:44:26,411 INFO L87 Difference]: Start difference. First operand 467 states and 1338 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:27,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:27,308 INFO L93 Difference]: Finished difference Result 857 states and 2323 transitions. [2022-11-20 12:44:27,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:44:27,309 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 12:44:27,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:27,311 INFO L225 Difference]: With dead ends: 857 [2022-11-20 12:44:27,311 INFO L226 Difference]: Without dead ends: 855 [2022-11-20 12:44:27,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:44:27,312 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 46 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:27,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 10 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 215 Invalid, 0 Unknown, 101 Unchecked, 0.8s Time] [2022-11-20 12:44:27,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-11-20 12:44:27,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 631. [2022-11-20 12:44:27,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 592 states have (on average 2.939189189189189) internal successors, (1740), 630 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:27,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1740 transitions. [2022-11-20 12:44:27,327 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1740 transitions. Word has length 10 [2022-11-20 12:44:27,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:27,328 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 1740 transitions. [2022-11-20 12:44:27,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:27,328 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1740 transitions. [2022-11-20 12:44:27,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 12:44:27,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:27,329 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:27,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:27,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:27,531 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:44:27,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:27,531 INFO L85 PathProgramCache]: Analyzing trace with hash 855435576, now seen corresponding path program 2 times [2022-11-20 12:44:27,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:27,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268630909] [2022-11-20 12:44:27,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:44:27,532 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:27,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:27,533 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:44:27,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-20 12:44:27,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:44:27,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:44:27,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:44:27,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:27,804 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-20 12:44:27,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 52 [2022-11-20 12:44:27,884 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:44:27,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-20 12:44:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:44:28,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:44:28,036 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:28,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268630909] [2022-11-20 12:44:28,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268630909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:28,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:28,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:44:28,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042590468] [2022-11-20 12:44:28,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:28,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:44:28,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:28,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:44:28,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:44:28,038 INFO L87 Difference]: Start difference. First operand 631 states and 1740 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:28,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:28,293 INFO L93 Difference]: Finished difference Result 595 states and 1636 transitions. [2022-11-20 12:44:28,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:44:28,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 12:44:28,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:28,295 INFO L225 Difference]: With dead ends: 595 [2022-11-20 12:44:28,295 INFO L226 Difference]: Without dead ends: 595 [2022-11-20 12:44:28,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:44:28,296 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:28,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:44:28,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-11-20 12:44:28,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 593. [2022-11-20 12:44:28,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 566 states have (on average 2.8869257950530036) internal successors, (1634), 592 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:28,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1634 transitions. [2022-11-20 12:44:28,305 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1634 transitions. Word has length 10 [2022-11-20 12:44:28,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:28,305 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 1634 transitions. [2022-11-20 12:44:28,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:28,305 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1634 transitions. [2022-11-20 12:44:28,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 12:44:28,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:28,306 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:28,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:28,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:28,507 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:44:28,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:28,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1118318437, now seen corresponding path program 1 times [2022-11-20 12:44:28,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:28,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544012581] [2022-11-20 12:44:28,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:28,508 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:28,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:28,509 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:44:28,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-20 12:44:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:28,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 12:44:28,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:28,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:28,879 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-20 12:44:28,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-11-20 12:44:28,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2022-11-20 12:44:29,039 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-20 12:44:29,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 12:44:29,798 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:44:29,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:44:30,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:44:30,975 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:30,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544012581] [2022-11-20 12:44:30,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544012581] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:44:30,975 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:44:30,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2022-11-20 12:44:30,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291603673] [2022-11-20 12:44:30,976 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:44:30,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:44:30,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:30,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:44:30,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:44:30,977 INFO L87 Difference]: Start difference. First operand 593 states and 1634 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:33,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:33,260 INFO L93 Difference]: Finished difference Result 1502 states and 4264 transitions. [2022-11-20 12:44:33,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:44:33,261 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 12:44:33,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:33,264 INFO L225 Difference]: With dead ends: 1502 [2022-11-20 12:44:33,264 INFO L226 Difference]: Without dead ends: 1484 [2022-11-20 12:44:33,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:44:33,265 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 366 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 294 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:33,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 25 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 229 Invalid, 0 Unknown, 294 Unchecked, 1.4s Time] [2022-11-20 12:44:33,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2022-11-20 12:44:33,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 593. [2022-11-20 12:44:33,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 566 states have (on average 2.8798586572438163) internal successors, (1630), 592 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:33,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1630 transitions. [2022-11-20 12:44:33,286 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1630 transitions. Word has length 11 [2022-11-20 12:44:33,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:33,286 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 1630 transitions. [2022-11-20 12:44:33,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:33,287 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1630 transitions. [2022-11-20 12:44:33,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 12:44:33,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:33,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:33,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:33,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:33,502 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:44:33,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:33,502 INFO L85 PathProgramCache]: Analyzing trace with hash 61585970, now seen corresponding path program 1 times [2022-11-20 12:44:33,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:33,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528713706] [2022-11-20 12:44:33,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:33,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:33,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:33,504 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:44:33,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-20 12:44:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:33,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:44:33,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:33,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:33,918 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-20 12:44:33,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-11-20 12:44:33,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 163 [2022-11-20 12:44:34,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:34,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:44:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:44:34,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:44:34,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:34,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528713706] [2022-11-20 12:44:34,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528713706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:34,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:34,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:44:34,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105809550] [2022-11-20 12:44:34,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:34,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:44:34,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:34,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:44:34,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:44:34,178 INFO L87 Difference]: Start difference. First operand 593 states and 1630 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:34,421 INFO L93 Difference]: Finished difference Result 598 states and 1650 transitions. [2022-11-20 12:44:34,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:44:34,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 12:44:34,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:34,423 INFO L225 Difference]: With dead ends: 598 [2022-11-20 12:44:34,423 INFO L226 Difference]: Without dead ends: 598 [2022-11-20 12:44:34,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:44:34,424 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:34,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 32 Unchecked, 0.2s Time] [2022-11-20 12:44:34,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-11-20 12:44:34,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 587. [2022-11-20 12:44:34,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 560 states have (on average 2.892857142857143) internal successors, (1620), 586 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:34,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 1620 transitions. [2022-11-20 12:44:34,438 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 1620 transitions. Word has length 11 [2022-11-20 12:44:34,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:34,439 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 1620 transitions. [2022-11-20 12:44:34,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:34,439 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 1620 transitions. [2022-11-20 12:44:34,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 12:44:34,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:34,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:34,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:34,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:34,655 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:44:34,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:34,655 INFO L85 PathProgramCache]: Analyzing trace with hash 61585883, now seen corresponding path program 1 times [2022-11-20 12:44:34,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:34,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655599702] [2022-11-20 12:44:34,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:34,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:34,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:34,657 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:44:34,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-20 12:44:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:34,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:44:34,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:34,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 12:44:34,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:44:34,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:44:34,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:34,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655599702] [2022-11-20 12:44:34,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655599702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:34,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:34,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:44:34,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566789191] [2022-11-20 12:44:34,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:34,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:44:34,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:34,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:44:34,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:44:34,890 INFO L87 Difference]: Start difference. First operand 587 states and 1620 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:35,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:35,154 INFO L93 Difference]: Finished difference Result 477 states and 1289 transitions. [2022-11-20 12:44:35,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:44:35,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 12:44:35,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:35,156 INFO L225 Difference]: With dead ends: 477 [2022-11-20 12:44:35,157 INFO L226 Difference]: Without dead ends: 477 [2022-11-20 12:44:35,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:44:35,158 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:35,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 1 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:44:35,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-11-20 12:44:35,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2022-11-20 12:44:35,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 463 states have (on average 2.7840172786177106) internal successors, (1289), 476 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:35,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 1289 transitions. [2022-11-20 12:44:35,170 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 1289 transitions. Word has length 11 [2022-11-20 12:44:35,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:35,170 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 1289 transitions. [2022-11-20 12:44:35,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:35,170 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 1289 transitions. [2022-11-20 12:44:35,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 12:44:35,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:35,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:35,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-11-20 12:44:35,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:35,389 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:44:35,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:35,390 INFO L85 PathProgramCache]: Analyzing trace with hash 61585884, now seen corresponding path program 1 times [2022-11-20 12:44:35,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:35,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776548891] [2022-11-20 12:44:35,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:35,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:35,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:35,391 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:44:35,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-20 12:44:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:35,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:44:35,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:44:35,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:44:35,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:35,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776548891] [2022-11-20 12:44:35,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776548891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:35,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:35,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:44:35,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863371129] [2022-11-20 12:44:35,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:35,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:44:35,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:35,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:44:35,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:44:35,681 INFO L87 Difference]: Start difference. First operand 477 states and 1289 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:36,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:36,217 INFO L93 Difference]: Finished difference Result 585 states and 1558 transitions. [2022-11-20 12:44:36,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:44:36,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 12:44:36,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:36,219 INFO L225 Difference]: With dead ends: 585 [2022-11-20 12:44:36,219 INFO L226 Difference]: Without dead ends: 488 [2022-11-20 12:44:36,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:44:36,220 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 25 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:36,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:44:36,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-11-20 12:44:36,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2022-11-20 12:44:36,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 473 states have (on average 2.7251585623678647) internal successors, (1289), 487 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:36,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 1289 transitions. [2022-11-20 12:44:36,230 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 1289 transitions. Word has length 11 [2022-11-20 12:44:36,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:36,231 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 1289 transitions. [2022-11-20 12:44:36,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:36,231 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 1289 transitions. [2022-11-20 12:44:36,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 12:44:36,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:36,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:36,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Ended with exit code 0 [2022-11-20 12:44:36,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:36,447 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:44:36,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:36,448 INFO L85 PathProgramCache]: Analyzing trace with hash 49963729, now seen corresponding path program 1 times [2022-11-20 12:44:36,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:36,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811057721] [2022-11-20 12:44:36,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:36,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:36,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:36,449 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:44:36,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-20 12:44:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:36,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 12:44:36,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:36,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:36,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:36,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:36,819 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-20 12:44:36,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 34 [2022-11-20 12:44:36,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 12:44:37,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:37,091 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:44:37,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 28 [2022-11-20 12:44:37,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:44:37,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:44:38,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:44:38,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:38,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811057721] [2022-11-20 12:44:38,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811057721] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:44:38,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:44:38,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 12:44:38,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932294121] [2022-11-20 12:44:38,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:44:38,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:44:38,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:38,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:44:38,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:44:38,082 INFO L87 Difference]: Start difference. First operand 488 states and 1289 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:38,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:38,282 INFO L93 Difference]: Finished difference Result 506 states and 1318 transitions. [2022-11-20 12:44:38,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:44:38,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 12:44:38,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:38,284 INFO L225 Difference]: With dead ends: 506 [2022-11-20 12:44:38,284 INFO L226 Difference]: Without dead ends: 506 [2022-11-20 12:44:38,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:44:38,285 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:38,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 87 Unchecked, 0.2s Time] [2022-11-20 12:44:38,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2022-11-20 12:44:38,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 502. [2022-11-20 12:44:38,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 487 states have (on average 2.6981519507186857) internal successors, (1314), 501 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1314 transitions. [2022-11-20 12:44:38,292 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1314 transitions. Word has length 11 [2022-11-20 12:44:38,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:38,292 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 1314 transitions. [2022-11-20 12:44:38,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:38,292 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1314 transitions. [2022-11-20 12:44:38,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 12:44:38,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:38,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:38,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:38,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:38,495 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:44:38,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:38,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1909163386, now seen corresponding path program 1 times [2022-11-20 12:44:38,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:38,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710639816] [2022-11-20 12:44:38,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:38,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:38,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:38,497 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:44:38,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-20 12:44:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:38,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:44:38,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:38,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:38,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:38,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:38,890 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-20 12:44:38,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-20 12:44:38,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 12:44:38,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:38,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:44:39,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:44:39,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:44:39,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:39,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710639816] [2022-11-20 12:44:39,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710639816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:39,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:39,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:44:39,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428759752] [2022-11-20 12:44:39,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:39,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:44:39,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:39,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:44:39,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:44:39,146 INFO L87 Difference]: Start difference. First operand 502 states and 1314 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:39,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:39,393 INFO L93 Difference]: Finished difference Result 501 states and 1310 transitions. [2022-11-20 12:44:39,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:44:39,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 12:44:39,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:39,395 INFO L225 Difference]: With dead ends: 501 [2022-11-20 12:44:39,396 INFO L226 Difference]: Without dead ends: 496 [2022-11-20 12:44:39,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:44:39,396 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:39,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 30 Unchecked, 0.2s Time] [2022-11-20 12:44:39,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-11-20 12:44:39,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 496. [2022-11-20 12:44:39,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 481 states have (on average 2.7068607068607067) internal successors, (1302), 495 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:39,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 1302 transitions. [2022-11-20 12:44:39,406 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 1302 transitions. Word has length 12 [2022-11-20 12:44:39,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:39,406 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 1302 transitions. [2022-11-20 12:44:39,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:39,407 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 1302 transitions. [2022-11-20 12:44:39,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 12:44:39,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:39,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:39,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:39,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:39,619 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:44:39,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:39,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1548873915, now seen corresponding path program 1 times [2022-11-20 12:44:39,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:39,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020667312] [2022-11-20 12:44:39,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:39,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:39,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:39,620 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:44:39,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-20 12:44:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:39,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:44:39,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:39,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:40,056 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-20 12:44:40,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-11-20 12:44:40,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2022-11-20 12:44:40,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:40,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:44:40,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:44:40,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:44:40,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:40,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020667312] [2022-11-20 12:44:40,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020667312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:40,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:40,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:44:40,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048026237] [2022-11-20 12:44:40,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:40,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:44:40,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:40,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:44:40,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:44:40,367 INFO L87 Difference]: Start difference. First operand 496 states and 1302 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:40,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:40,647 INFO L93 Difference]: Finished difference Result 498 states and 1303 transitions. [2022-11-20 12:44:40,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:44:40,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 12:44:40,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:40,649 INFO L225 Difference]: With dead ends: 498 [2022-11-20 12:44:40,649 INFO L226 Difference]: Without dead ends: 480 [2022-11-20 12:44:40,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:44:40,650 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:40,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 31 Unchecked, 0.2s Time] [2022-11-20 12:44:40,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-11-20 12:44:40,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 470. [2022-11-20 12:44:40,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 455 states have (on average 2.756043956043956) internal successors, (1254), 469 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:40,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1254 transitions. [2022-11-20 12:44:40,658 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1254 transitions. Word has length 12 [2022-11-20 12:44:40,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:40,659 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 1254 transitions. [2022-11-20 12:44:40,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:40,659 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1254 transitions. [2022-11-20 12:44:40,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 12:44:40,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:40,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:40,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-11-20 12:44:40,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:40,881 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:44:40,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:40,881 INFO L85 PathProgramCache]: Analyzing trace with hash -166696693, now seen corresponding path program 1 times [2022-11-20 12:44:40,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:40,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882992440] [2022-11-20 12:44:40,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:40,882 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:40,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:40,883 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:44:40,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-20 12:44:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:41,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 12:44:41,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:41,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:44:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:44:41,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:44:42,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:44:42,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:42,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882992440] [2022-11-20 12:44:42,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882992440] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:44:42,813 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:44:42,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-20 12:44:42,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705523340] [2022-11-20 12:44:42,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:44:42,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:44:42,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:42,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:44:42,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:44:42,814 INFO L87 Difference]: Start difference. First operand 470 states and 1254 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:44,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:44,306 INFO L93 Difference]: Finished difference Result 922 states and 2588 transitions. [2022-11-20 12:44:44,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:44:44,307 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 12:44:44,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:44,308 INFO L225 Difference]: With dead ends: 922 [2022-11-20 12:44:44,308 INFO L226 Difference]: Without dead ends: 876 [2022-11-20 12:44:44,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:44:44,309 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 119 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:44,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 6 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 174 Unchecked, 0.3s Time] [2022-11-20 12:44:44,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-20 12:44:44,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 818. [2022-11-20 12:44:44,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 803 states have (on average 2.9140722291407224) internal successors, (2340), 817 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:44,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 2340 transitions. [2022-11-20 12:44:44,328 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 2340 transitions. Word has length 12 [2022-11-20 12:44:44,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:44,328 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 2340 transitions. [2022-11-20 12:44:44,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:44,329 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 2340 transitions. [2022-11-20 12:44:44,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 12:44:44,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:44,330 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:44,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:44,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:44,530 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:44:44,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:44,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1733629524, now seen corresponding path program 1 times [2022-11-20 12:44:44,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:44,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018751092] [2022-11-20 12:44:44,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:44,531 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:44,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:44,532 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:44:44,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-20 12:44:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:44,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:44:44,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:44,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:44,966 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-20 12:44:44,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-11-20 12:44:44,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:45,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 94 [2022-11-20 12:44:45,177 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:44:45,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 12:44:45,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:44:45,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:44:45,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:45,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018751092] [2022-11-20 12:44:45,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018751092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:45,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:45,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:44:45,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917808192] [2022-11-20 12:44:45,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:45,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:44:45,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:45,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:44:45,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:44:45,629 INFO L87 Difference]: Start difference. First operand 818 states and 2340 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:45,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:45,816 INFO L93 Difference]: Finished difference Result 817 states and 2338 transitions. [2022-11-20 12:44:45,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:44:45,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 12:44:45,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:45,818 INFO L225 Difference]: With dead ends: 817 [2022-11-20 12:44:45,818 INFO L226 Difference]: Without dead ends: 817 [2022-11-20 12:44:45,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:44:45,819 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:45,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 40 Unchecked, 0.2s Time] [2022-11-20 12:44:45,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-11-20 12:44:45,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 817. [2022-11-20 12:44:45,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 802 states have (on average 2.915211970074813) internal successors, (2338), 816 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:45,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 2338 transitions. [2022-11-20 12:44:45,831 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 2338 transitions. Word has length 12 [2022-11-20 12:44:45,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:45,832 INFO L495 AbstractCegarLoop]: Abstraction has 817 states and 2338 transitions. [2022-11-20 12:44:45,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:45,832 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 2338 transitions. [2022-11-20 12:44:45,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 12:44:45,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:45,833 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-20 12:44:45,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:46,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:46,048 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:44:46,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:46,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1708200727, now seen corresponding path program 3 times [2022-11-20 12:44:46,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:46,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630458291] [2022-11-20 12:44:46,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:44:46,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:46,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:46,050 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:44:46,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-20 12:44:46,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-20 12:44:46,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:44:46,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 12:44:46,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:46,581 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:44:46,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:44:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:44:47,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:44:51,086 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:44:51,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:51,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630458291] [2022-11-20 12:44:51,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630458291] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:44:51,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:44:51,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-20 12:44:51,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788608676] [2022-11-20 12:44:51,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:44:51,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 12:44:51,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:51,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 12:44:51,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:44:51,088 INFO L87 Difference]: Start difference. First operand 817 states and 2338 transitions. Second operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:45:02,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:45:04,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:45:06,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:45:08,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:45:10,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:45:12,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:45:14,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:45:16,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:45:18,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:45:20,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:45:37,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:45:37,436 INFO L93 Difference]: Finished difference Result 3796 states and 10925 transitions. [2022-11-20 12:45:37,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 12:45:37,438 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 12:45:37,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:45:37,445 INFO L225 Difference]: With dead ends: 3796 [2022-11-20 12:45:37,445 INFO L226 Difference]: Without dead ends: 3796 [2022-11-20 12:45:37,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 12:45:37,446 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2820 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 3433 mSolverCounterSat, 247 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2820 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 3689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 3433 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:45:37,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2820 Valid, 131 Invalid, 3689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 3433 Invalid, 9 Unknown, 0 Unchecked, 30.9s Time] [2022-11-20 12:45:37,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3796 states. [2022-11-20 12:45:37,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3796 to 829. [2022-11-20 12:45:37,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 814 states have (on average 2.901719901719902) internal successors, (2362), 828 states have internal predecessors, (2362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:45:37,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 2362 transitions. [2022-11-20 12:45:37,488 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 2362 transitions. Word has length 12 [2022-11-20 12:45:37,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:45:37,488 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 2362 transitions. [2022-11-20 12:45:37,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:45:37,489 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 2362 transitions. [2022-11-20 12:45:37,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 12:45:37,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:45:37,490 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:45:37,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-20 12:45:37,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:45:37,703 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:45:37,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:45:37,703 INFO L85 PathProgramCache]: Analyzing trace with hash -2092209592, now seen corresponding path program 1 times [2022-11-20 12:45:37,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:45:37,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263211068] [2022-11-20 12:45:37,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:45:37,704 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:45:37,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:45:37,705 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:45:37,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-20 12:45:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:45:37,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:45:37,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:45:38,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:45:38,154 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-20 12:45:38,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-11-20 12:45:38,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 126 [2022-11-20 12:45:38,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:45:38,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:45:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:45:38,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:45:38,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:45:38,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263211068] [2022-11-20 12:45:38,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263211068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:45:38,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:45:38,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:45:38,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762876175] [2022-11-20 12:45:38,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:45:38,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:45:38,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:45:38,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:45:38,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:45:38,442 INFO L87 Difference]: Start difference. First operand 829 states and 2362 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:45:38,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:45:38,732 INFO L93 Difference]: Finished difference Result 827 states and 2359 transitions. [2022-11-20 12:45:38,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:45:38,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 12:45:38,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:45:38,735 INFO L225 Difference]: With dead ends: 827 [2022-11-20 12:45:38,735 INFO L226 Difference]: Without dead ends: 808 [2022-11-20 12:45:38,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:45:38,736 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:45:38,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 45 Unchecked, 0.3s Time] [2022-11-20 12:45:38,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-11-20 12:45:38,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2022-11-20 12:45:38,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 794 states have (on average 2.9282115869017633) internal successors, (2325), 807 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:45:38,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 2325 transitions. [2022-11-20 12:45:38,747 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 2325 transitions. Word has length 13 [2022-11-20 12:45:38,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:45:38,747 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 2325 transitions. [2022-11-20 12:45:38,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:45:38,747 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 2325 transitions. [2022-11-20 12:45:38,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 12:45:38,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:45:38,748 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:45:38,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Ended with exit code 0 [2022-11-20 12:45:38,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:45:38,948 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:45:38,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:45:38,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1010253611, now seen corresponding path program 2 times [2022-11-20 12:45:38,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:45:38,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179375265] [2022-11-20 12:45:38,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:45:38,949 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:45:38,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:45:38,950 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:45:38,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-20 12:45:39,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:45:39,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:45:39,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:45:39,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:45:39,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:45:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:45:39,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:45:39,378 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:45:39,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179375265] [2022-11-20 12:45:39,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179375265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:45:39,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:45:39,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:45:39,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216335279] [2022-11-20 12:45:39,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:45:39,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:45:39,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:45:39,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:45:39,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:45:39,379 INFO L87 Difference]: Start difference. First operand 808 states and 2325 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:45:39,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:45:39,700 INFO L93 Difference]: Finished difference Result 714 states and 2030 transitions. [2022-11-20 12:45:39,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:45:39,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 12:45:39,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:45:39,702 INFO L225 Difference]: With dead ends: 714 [2022-11-20 12:45:39,703 INFO L226 Difference]: Without dead ends: 640 [2022-11-20 12:45:39,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:45:39,703 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:45:39,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 1 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:45:39,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2022-11-20 12:45:39,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 322. [2022-11-20 12:45:39,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 317 states have (on average 2.6466876971608833) internal successors, (839), 321 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:45:39,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 839 transitions. [2022-11-20 12:45:39,709 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 839 transitions. Word has length 14 [2022-11-20 12:45:39,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:45:39,710 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 839 transitions. [2022-11-20 12:45:39,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:45:39,710 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 839 transitions. [2022-11-20 12:45:39,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 12:45:39,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:45:39,711 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:45:39,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Ended with exit code 0 [2022-11-20 12:45:39,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:45:39,911 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:45:39,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:45:39,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1393882331, now seen corresponding path program 2 times [2022-11-20 12:45:39,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:45:39,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992915918] [2022-11-20 12:45:39,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:45:39,912 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:45:39,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:45:39,914 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:45:39,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-20 12:45:40,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:45:40,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:45:40,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:45:40,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:45:40,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:45:40,264 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-20 12:45:40,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-11-20 12:45:40,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2022-11-20 12:45:40,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:45:40,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:45:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 12:45:40,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:45:40,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:45:40,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992915918] [2022-11-20 12:45:40,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992915918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:45:40,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:45:40,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:45:40,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064259206] [2022-11-20 12:45:40,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:45:40,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:45:40,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:45:40,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:45:40,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:45:40,611 INFO L87 Difference]: Start difference. First operand 322 states and 839 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:45:40,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:45:40,803 INFO L93 Difference]: Finished difference Result 318 states and 829 transitions. [2022-11-20 12:45:40,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:45:40,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 12:45:40,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:45:40,805 INFO L225 Difference]: With dead ends: 318 [2022-11-20 12:45:40,805 INFO L226 Difference]: Without dead ends: 309 [2022-11-20 12:45:40,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:45:40,806 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 3 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:45:40,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 28 Unchecked, 0.2s Time] [2022-11-20 12:45:40,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-11-20 12:45:40,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2022-11-20 12:45:40,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 305 states have (on average 2.6491803278688524) internal successors, (808), 308 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:45:40,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 808 transitions. [2022-11-20 12:45:40,812 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 808 transitions. Word has length 15 [2022-11-20 12:45:40,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:45:40,812 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 808 transitions. [2022-11-20 12:45:40,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:45:40,812 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 808 transitions. [2022-11-20 12:45:40,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 12:45:40,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:45:40,813 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:45:40,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2022-11-20 12:45:41,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:45:41,026 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:45:41,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:45:41,026 INFO L85 PathProgramCache]: Analyzing trace with hash 294717239, now seen corresponding path program 1 times [2022-11-20 12:45:41,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:45:41,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553110622] [2022-11-20 12:45:41,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:45:41,027 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:45:41,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:45:41,028 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:45:41,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-20 12:45:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:45:41,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 12:45:41,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:45:41,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:45:41,533 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-20 12:45:41,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-11-20 12:45:41,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 510 treesize of output 494 [2022-11-20 12:45:41,672 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-20 12:45:41,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 12:45:42,865 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:45:42,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:45:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:45:45,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:45:45,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553110622] [2022-11-20 12:45:45,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553110622] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:45:45,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:45:45,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2022-11-20 12:45:45,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930955208] [2022-11-20 12:45:45,387 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:45:45,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:45:45,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:45:45,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:45:45,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:45:45,388 INFO L87 Difference]: Start difference. First operand 309 states and 808 transitions. Second operand has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:45:50,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:45:50,917 INFO L93 Difference]: Finished difference Result 921 states and 2587 transitions. [2022-11-20 12:45:50,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 12:45:50,919 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 12:45:50,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:45:50,921 INFO L225 Difference]: With dead ends: 921 [2022-11-20 12:45:50,921 INFO L226 Difference]: Without dead ends: 912 [2022-11-20 12:45:50,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=376, Invalid=814, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 12:45:50,921 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 574 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 411 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:45:50,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 48 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 498 Invalid, 0 Unknown, 411 Unchecked, 2.3s Time] [2022-11-20 12:45:50,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2022-11-20 12:45:50,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 309. [2022-11-20 12:45:50,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 305 states have (on average 2.6491803278688524) internal successors, (808), 308 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:45:50,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 808 transitions. [2022-11-20 12:45:50,931 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 808 transitions. Word has length 17 [2022-11-20 12:45:50,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:45:50,932 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 808 transitions. [2022-11-20 12:45:50,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:45:50,932 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 808 transitions. [2022-11-20 12:45:50,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 12:45:50,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:45:50,933 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1] [2022-11-20 12:45:50,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Ended with exit code 0 [2022-11-20 12:45:51,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:45:51,133 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:45:51,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:45:51,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1700922849, now seen corresponding path program 2 times [2022-11-20 12:45:51,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:45:51,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866456888] [2022-11-20 12:45:51,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:45:51,134 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:45:51,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:45:51,135 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:45:51,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-20 12:45:51,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:45:51,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:45:51,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 12:45:51,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:45:51,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:45:52,544 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:45:52,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:46:00,071 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:46:00,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:46:00,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866456888] [2022-11-20 12:46:00,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866456888] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:46:00,071 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:46:00,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2022-11-20 12:46:00,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928318618] [2022-11-20 12:46:00,071 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:46:00,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 12:46:00,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:46:00,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 12:46:00,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=902, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 12:46:00,073 INFO L87 Difference]: Start difference. First operand 309 states and 808 transitions. Second operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:22,637 WARN L233 SmtUtils]: Spent 13.24s on a formula simplification that was a NOOP. DAG size: 189 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:46:25,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:27,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:29,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:31,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:33,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:35,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:37,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:39,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:41,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:43,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:45,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:47,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:49,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:51,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:53,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:55,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:04,069 WARN L233 SmtUtils]: Spent 7.65s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:47:16,858 WARN L233 SmtUtils]: Spent 6.28s on a formula simplification that was a NOOP. DAG size: 157 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:48:02,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:48:02,035 INFO L93 Difference]: Finished difference Result 6469 states and 18974 transitions. [2022-11-20 12:48:02,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 12:48:02,036 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 12:48:02,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:48:02,048 INFO L225 Difference]: With dead ends: 6469 [2022-11-20 12:48:02,048 INFO L226 Difference]: Without dead ends: 6469 [2022-11-20 12:48:02,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 65.1s TimeCoverageRelationStatistics Valid=934, Invalid=1718, Unknown=0, NotChecked=0, Total=2652 [2022-11-20 12:48:02,049 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 6488 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 7346 mSolverCounterSat, 468 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6488 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 7830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 7346 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:48:02,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6488 Valid, 288 Invalid, 7830 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [468 Valid, 7346 Invalid, 16 Unknown, 0 Unchecked, 64.2s Time] [2022-11-20 12:48:02,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6469 states. [2022-11-20 12:48:02,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6469 to 363. [2022-11-20 12:48:02,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 359 states have (on average 2.501392757660167) internal successors, (898), 362 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 898 transitions. [2022-11-20 12:48:02,098 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 898 transitions. Word has length 19 [2022-11-20 12:48:02,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:48:02,098 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 898 transitions. [2022-11-20 12:48:02,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:02,098 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 898 transitions. [2022-11-20 12:48:02,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 12:48:02,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:48:02,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:48:02,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-11-20 12:48:02,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:48:02,313 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:48:02,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:48:02,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1765714229, now seen corresponding path program 1 times [2022-11-20 12:48:02,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:48:02,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749631970] [2022-11-20 12:48:02,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:48:02,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:48:02,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:48:02,315 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:48:02,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-20 12:48:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:02,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:48:02,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:48:03,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:48:03,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:48:03,283 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:48:03,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749631970] [2022-11-20 12:48:03,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749631970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:48:03,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:48:03,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:48:03,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134946872] [2022-11-20 12:48:03,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:48:03,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:48:03,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:48:03,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:48:03,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:48:03,287 INFO L87 Difference]: Start difference. First operand 363 states and 898 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:04,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:48:04,451 INFO L93 Difference]: Finished difference Result 412 states and 1018 transitions. [2022-11-20 12:48:04,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:48:04,452 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 12:48:04,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:48:04,453 INFO L225 Difference]: With dead ends: 412 [2022-11-20 12:48:04,453 INFO L226 Difference]: Without dead ends: 405 [2022-11-20 12:48:04,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:48:04,454 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 27 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:48:04,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 4 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 12:48:04,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-11-20 12:48:04,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 389. [2022-11-20 12:48:04,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 385 states have (on average 2.477922077922078) internal successors, (954), 388 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:04,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 954 transitions. [2022-11-20 12:48:04,459 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 954 transitions. Word has length 24 [2022-11-20 12:48:04,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:48:04,459 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 954 transitions. [2022-11-20 12:48:04,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:04,459 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 954 transitions. [2022-11-20 12:48:04,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 12:48:04,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:48:04,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:48:04,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2022-11-20 12:48:04,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:48:04,674 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:48:04,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:48:04,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1572371787, now seen corresponding path program 2 times [2022-11-20 12:48:04,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:48:04,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286145458] [2022-11-20 12:48:04,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:48:04,681 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:48:04,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:48:04,682 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:48:04,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-20 12:48:04,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:48:04,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:48:04,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:48:04,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:48:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:48:05,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:48:05,543 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:48:05,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286145458] [2022-11-20 12:48:05,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286145458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:48:05,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:48:05,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:48:05,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270385940] [2022-11-20 12:48:05,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:48:05,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:48:05,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:48:05,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:48:05,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:48:05,545 INFO L87 Difference]: Start difference. First operand 389 states and 954 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:06,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:48:06,671 INFO L93 Difference]: Finished difference Result 470 states and 1148 transitions. [2022-11-20 12:48:06,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:48:06,672 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 12:48:06,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:48:06,673 INFO L225 Difference]: With dead ends: 470 [2022-11-20 12:48:06,673 INFO L226 Difference]: Without dead ends: 463 [2022-11-20 12:48:06,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:48:06,674 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 36 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:48:06,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 4 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 12:48:06,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-11-20 12:48:06,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 414. [2022-11-20 12:48:06,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 410 states have (on average 2.4853658536585366) internal successors, (1019), 413 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:06,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 1019 transitions. [2022-11-20 12:48:06,679 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 1019 transitions. Word has length 24 [2022-11-20 12:48:06,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:48:06,679 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 1019 transitions. [2022-11-20 12:48:06,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:06,680 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 1019 transitions. [2022-11-20 12:48:06,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 12:48:06,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:48:06,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:48:06,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2022-11-20 12:48:06,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:48:06,899 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:48:06,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:48:06,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1966341183, now seen corresponding path program 3 times [2022-11-20 12:48:06,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:48:06,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233301625] [2022-11-20 12:48:06,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:48:06,900 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:48:06,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:48:06,901 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:48:06,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-11-20 12:48:07,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-20 12:48:07,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:48:07,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:48:07,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:48:07,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:48:07,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:48:07,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:48:07,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233301625] [2022-11-20 12:48:07,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233301625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:48:07,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:48:07,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:48:07,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571268444] [2022-11-20 12:48:07,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:48:07,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:48:07,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:48:07,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:48:07,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:48:07,734 INFO L87 Difference]: Start difference. First operand 414 states and 1019 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:08,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:48:08,917 INFO L93 Difference]: Finished difference Result 498 states and 1235 transitions. [2022-11-20 12:48:08,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:48:08,918 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 12:48:08,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:48:08,919 INFO L225 Difference]: With dead ends: 498 [2022-11-20 12:48:08,919 INFO L226 Difference]: Without dead ends: 491 [2022-11-20 12:48:08,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:48:08,920 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 49 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:48:08,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 4 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 12:48:08,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-20 12:48:08,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 423. [2022-11-20 12:48:08,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 419 states have (on average 2.467780429594272) internal successors, (1034), 422 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:08,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 1034 transitions. [2022-11-20 12:48:08,928 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 1034 transitions. Word has length 24 [2022-11-20 12:48:08,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:48:08,928 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 1034 transitions. [2022-11-20 12:48:08,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:08,928 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 1034 transitions. [2022-11-20 12:48:08,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 12:48:08,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:48:08,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:48:08,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2022-11-20 12:48:09,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:48:09,129 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:48:09,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:48:09,130 INFO L85 PathProgramCache]: Analyzing trace with hash 454316073, now seen corresponding path program 4 times [2022-11-20 12:48:09,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:48:09,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161884687] [2022-11-20 12:48:09,130 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:48:09,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:48:09,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:48:09,131 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:48:09,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-20 12:48:09,534 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:48:09,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:48:09,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:48:09,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:48:10,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:48:10,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:48:10,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:48:10,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161884687] [2022-11-20 12:48:10,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161884687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:48:10,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:48:10,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:48:10,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530912604] [2022-11-20 12:48:10,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:48:10,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:48:10,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:48:10,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:48:10,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:48:10,112 INFO L87 Difference]: Start difference. First operand 423 states and 1034 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:11,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:48:11,259 INFO L93 Difference]: Finished difference Result 464 states and 1134 transitions. [2022-11-20 12:48:11,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:48:11,260 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 12:48:11,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:48:11,261 INFO L225 Difference]: With dead ends: 464 [2022-11-20 12:48:11,261 INFO L226 Difference]: Without dead ends: 457 [2022-11-20 12:48:11,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:48:11,261 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 31 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:48:11,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 9 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 12:48:11,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-11-20 12:48:11,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 415. [2022-11-20 12:48:11,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 411 states have (on average 2.4671532846715327) internal successors, (1014), 414 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:11,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 1014 transitions. [2022-11-20 12:48:11,267 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 1014 transitions. Word has length 24 [2022-11-20 12:48:11,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:48:11,267 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 1014 transitions. [2022-11-20 12:48:11,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:11,267 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 1014 transitions. [2022-11-20 12:48:11,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 12:48:11,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:48:11,268 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1] [2022-11-20 12:48:11,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2022-11-20 12:48:11,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:48:11,482 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:48:11,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:48:11,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1312281367, now seen corresponding path program 4 times [2022-11-20 12:48:11,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:48:11,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824520403] [2022-11-20 12:48:11,482 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:48:11,483 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:48:11,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:48:11,484 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:48:11,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-20 12:48:11,760 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:48:11,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:48:11,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-20 12:48:11,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:48:11,941 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:48:11,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:48:13,869 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:48:13,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:48:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:48:27,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:48:27,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824520403] [2022-11-20 12:48:27,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824520403] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:48:27,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:48:27,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 46 [2022-11-20 12:48:27,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459479279] [2022-11-20 12:48:27,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:48:27,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-20 12:48:27,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:48:27,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-20 12:48:27,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2022-11-20 12:48:27,823 INFO L87 Difference]: Start difference. First operand 415 states and 1014 transitions. Second operand has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:49:13,057 WARN L233 SmtUtils]: Spent 25.15s on a formula simplification that was a NOOP. DAG size: 254 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:49:34,467 WARN L233 SmtUtils]: Spent 18.32s on a formula simplification that was a NOOP. DAG size: 243 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:49:36,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:49:38,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:49:40,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:49:42,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:49:44,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:49:46,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:49:48,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:49:50,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:49:52,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:49:54,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:49:56,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:49:58,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:00,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:02,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:04,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:06,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:08,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:10,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:12,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:14,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:16,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:18,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:34,244 WARN L233 SmtUtils]: Spent 12.70s on a formula simplification that was a NOOP. DAG size: 232 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:50:56,672 WARN L233 SmtUtils]: Spent 19.81s on a formula simplification that was a NOOP. DAG size: 222 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:51:12,987 WARN L233 SmtUtils]: Spent 13.30s on a formula simplification that was a NOOP. DAG size: 211 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:51:24,467 WARN L233 SmtUtils]: Spent 8.34s on a formula simplification that was a NOOP. DAG size: 200 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:51:32,421 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification that was a NOOP. DAG size: 189 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:51:43,279 WARN L233 SmtUtils]: Spent 7.97s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:51:54,317 WARN L233 SmtUtils]: Spent 8.55s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:52:08,750 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification that was a NOOP. DAG size: 146 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:52:38,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:38,281 INFO L93 Difference]: Finished difference Result 5815 states and 16236 transitions. [2022-11-20 12:52:38,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-20 12:52:38,282 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 12:52:38,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:38,291 INFO L225 Difference]: With dead ends: 5815 [2022-11-20 12:52:38,291 INFO L226 Difference]: Without dead ends: 5815 [2022-11-20 12:52:38,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 185.0s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2022-11-20 12:52:38,292 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 6171 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 13508 mSolverCounterSat, 496 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6171 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 14026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 13508 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:38,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6171 Valid, 528 Invalid, 14026 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [496 Valid, 13508 Invalid, 22 Unknown, 0 Unchecked, 79.0s Time] [2022-11-20 12:52:38,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5815 states. [2022-11-20 12:52:38,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5815 to 439. [2022-11-20 12:52:38,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 435 states have (on average 2.4413793103448276) internal successors, (1062), 438 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:38,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 1062 transitions. [2022-11-20 12:52:38,322 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 1062 transitions. Word has length 24 [2022-11-20 12:52:38,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:38,323 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 1062 transitions. [2022-11-20 12:52:38,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:38,323 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 1062 transitions. [2022-11-20 12:52:38,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:52:38,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:38,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:52:38,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Ended with exit code 0 [2022-11-20 12:52:38,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:38,524 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:52:38,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:38,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1096201599, now seen corresponding path program 1 times [2022-11-20 12:52:38,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:52:38,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505856692] [2022-11-20 12:52:38,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:52:38,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:38,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:52:38,526 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:52:38,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2022-11-20 12:52:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:52:38,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:52:38,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:52:39,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:52:39,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:52:39,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:52:39,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505856692] [2022-11-20 12:52:39,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505856692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:52:39,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:52:39,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:52:39,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610259260] [2022-11-20 12:52:39,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:52:39,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:52:39,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:52:39,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:52:39,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:52:39,483 INFO L87 Difference]: Start difference. First operand 439 states and 1062 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:39,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:39,950 INFO L93 Difference]: Finished difference Result 493 states and 1174 transitions. [2022-11-20 12:52:39,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:52:39,952 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:52:39,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:39,952 INFO L225 Difference]: With dead ends: 493 [2022-11-20 12:52:39,953 INFO L226 Difference]: Without dead ends: 490 [2022-11-20 12:52:39,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:52:39,953 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 8 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 133 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:39,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 133 Unchecked, 0.5s Time] [2022-11-20 12:52:39,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-11-20 12:52:39,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 464. [2022-11-20 12:52:39,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 460 states have (on average 2.4239130434782608) internal successors, (1115), 463 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:39,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1115 transitions. [2022-11-20 12:52:39,959 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1115 transitions. Word has length 25 [2022-11-20 12:52:39,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:39,959 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 1115 transitions. [2022-11-20 12:52:39,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:39,960 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1115 transitions. [2022-11-20 12:52:39,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:52:39,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:39,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:52:39,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2022-11-20 12:52:40,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:40,167 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:52:40,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:40,167 INFO L85 PathProgramCache]: Analyzing trace with hash 978095223, now seen corresponding path program 2 times [2022-11-20 12:52:40,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:52:40,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555782619] [2022-11-20 12:52:40,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:52:40,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:40,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:52:40,168 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:52:40,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-20 12:52:40,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:52:40,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:52:40,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:52:40,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:52:41,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:52:41,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:52:41,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:52:41,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555782619] [2022-11-20 12:52:41,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555782619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:52:41,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:52:41,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:52:41,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771150384] [2022-11-20 12:52:41,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:52:41,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:52:41,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:52:41,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:52:41,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:52:41,061 INFO L87 Difference]: Start difference. First operand 464 states and 1115 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:41,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:41,560 INFO L93 Difference]: Finished difference Result 496 states and 1176 transitions. [2022-11-20 12:52:41,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:52:41,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:52:41,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:41,563 INFO L225 Difference]: With dead ends: 496 [2022-11-20 12:52:41,563 INFO L226 Difference]: Without dead ends: 480 [2022-11-20 12:52:41,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:52:41,563 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 14 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:41,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 99 Unchecked, 0.5s Time] [2022-11-20 12:52:41,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-11-20 12:52:41,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 466. [2022-11-20 12:52:41,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 462 states have (on average 2.4285714285714284) internal successors, (1122), 465 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:41,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1122 transitions. [2022-11-20 12:52:41,572 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1122 transitions. Word has length 25 [2022-11-20 12:52:41,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:41,572 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 1122 transitions. [2022-11-20 12:52:41,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:41,572 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1122 transitions. [2022-11-20 12:52:41,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:52:41,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:41,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:52:41,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2022-11-20 12:52:41,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:41,790 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:52:41,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:41,790 INFO L85 PathProgramCache]: Analyzing trace with hash -271667435, now seen corresponding path program 3 times [2022-11-20 12:52:41,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:52:41,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954601249] [2022-11-20 12:52:41,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:52:41,791 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:41,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:52:41,792 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:52:41,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2022-11-20 12:52:42,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:52:42,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:52:42,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:52:42,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:52:42,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:52:42,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:52:42,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:52:42,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954601249] [2022-11-20 12:52:42,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954601249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:52:42,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:52:42,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:52:42,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876545219] [2022-11-20 12:52:42,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:52:42,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:52:42,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:52:42,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:52:42,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:52:42,792 INFO L87 Difference]: Start difference. First operand 466 states and 1122 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:43,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:43,293 INFO L93 Difference]: Finished difference Result 488 states and 1160 transitions. [2022-11-20 12:52:43,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:52:43,295 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:52:43,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:43,296 INFO L225 Difference]: With dead ends: 488 [2022-11-20 12:52:43,296 INFO L226 Difference]: Without dead ends: 485 [2022-11-20 12:52:43,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:52:43,296 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:43,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 4 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 107 Unchecked, 0.5s Time] [2022-11-20 12:52:43,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-11-20 12:52:43,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 466. [2022-11-20 12:52:43,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 462 states have (on average 2.4285714285714284) internal successors, (1122), 465 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:43,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1122 transitions. [2022-11-20 12:52:43,302 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1122 transitions. Word has length 25 [2022-11-20 12:52:43,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:43,302 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 1122 transitions. [2022-11-20 12:52:43,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:43,303 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1122 transitions. [2022-11-20 12:52:43,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:52:43,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:43,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:52:43,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2022-11-20 12:52:43,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:43,523 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:52:43,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:43,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1555337441, now seen corresponding path program 4 times [2022-11-20 12:52:43,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:52:43,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858771305] [2022-11-20 12:52:43,524 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:52:43,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:43,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:52:43,525 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:52:43,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-20 12:52:43,797 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:52:43,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:52:43,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:52:43,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:52:44,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:52:44,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:52:44,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:52:44,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858771305] [2022-11-20 12:52:44,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858771305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:52:44,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:52:44,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:52:44,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197436925] [2022-11-20 12:52:44,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:52:44,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:52:44,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:52:44,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:52:44,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:52:44,272 INFO L87 Difference]: Start difference. First operand 466 states and 1122 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:44,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:44,787 INFO L93 Difference]: Finished difference Result 491 states and 1166 transitions. [2022-11-20 12:52:44,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:52:44,789 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:52:44,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:44,790 INFO L225 Difference]: With dead ends: 491 [2022-11-20 12:52:44,790 INFO L226 Difference]: Without dead ends: 483 [2022-11-20 12:52:44,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:52:44,790 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:44,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 127 Unchecked, 0.5s Time] [2022-11-20 12:52:44,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-20 12:52:44,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 467. [2022-11-20 12:52:44,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 463 states have (on average 2.427645788336933) internal successors, (1124), 466 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:44,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 1124 transitions. [2022-11-20 12:52:44,800 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 1124 transitions. Word has length 25 [2022-11-20 12:52:44,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:44,801 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 1124 transitions. [2022-11-20 12:52:44,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:44,801 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 1124 transitions. [2022-11-20 12:52:44,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:52:44,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:44,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:52:44,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Ended with exit code 0 [2022-11-20 12:52:45,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:45,018 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:52:45,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:45,018 INFO L85 PathProgramCache]: Analyzing trace with hash 305574783, now seen corresponding path program 5 times [2022-11-20 12:52:45,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:52:45,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860188534] [2022-11-20 12:52:45,019 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:52:45,019 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:45,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:52:45,020 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:52:45,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2022-11-20 12:52:45,310 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:52:45,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:52:45,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:52:45,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:52:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:52:45,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:52:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:52:46,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:52:46,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860188534] [2022-11-20 12:52:46,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860188534] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:52:46,275 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:52:46,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-20 12:52:46,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246737789] [2022-11-20 12:52:46,275 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:52:46,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:52:46,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:52:46,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:52:46,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:52:46,276 INFO L87 Difference]: Start difference. First operand 467 states and 1124 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:47,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:47,161 INFO L93 Difference]: Finished difference Result 751 states and 1867 transitions. [2022-11-20 12:52:47,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:52:47,163 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:52:47,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:47,164 INFO L225 Difference]: With dead ends: 751 [2022-11-20 12:52:47,164 INFO L226 Difference]: Without dead ends: 705 [2022-11-20 12:52:47,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:52:47,165 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 161 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:47,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 5 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 83 Unchecked, 0.6s Time] [2022-11-20 12:52:47,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-11-20 12:52:47,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 629. [2022-11-20 12:52:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 625 states have (on average 2.48) internal successors, (1550), 628 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1550 transitions. [2022-11-20 12:52:47,186 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1550 transitions. Word has length 25 [2022-11-20 12:52:47,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:47,187 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 1550 transitions. [2022-11-20 12:52:47,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:47,187 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1550 transitions. [2022-11-20 12:52:47,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:52:47,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:47,188 INFO L195 NwaCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:52:47,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (70)] Ended with exit code 0 [2022-11-20 12:52:47,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:47,389 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:52:47,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:47,389 INFO L85 PathProgramCache]: Analyzing trace with hash 545337015, now seen corresponding path program 2 times [2022-11-20 12:52:47,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:52:47,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448694595] [2022-11-20 12:52:47,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:52:47,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:47,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:52:47,391 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:52:47,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-20 12:52:47,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:52:47,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:52:47,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:52:47,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:52:47,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:52:47,802 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-20 12:52:47,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-11-20 12:52:47,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2022-11-20 12:52:47,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:52:47,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:52:48,315 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-20 12:52:48,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:52:48,315 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:52:48,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448694595] [2022-11-20 12:52:48,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448694595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:52:48,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:52:48,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:52:48,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098277467] [2022-11-20 12:52:48,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:52:48,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:52:48,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:52:48,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:52:48,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:52:48,317 INFO L87 Difference]: Start difference. First operand 629 states and 1550 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:48,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:48,522 INFO L93 Difference]: Finished difference Result 628 states and 1545 transitions. [2022-11-20 12:52:48,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:52:48,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:52:48,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:48,524 INFO L225 Difference]: With dead ends: 628 [2022-11-20 12:52:48,524 INFO L226 Difference]: Without dead ends: 628 [2022-11-20 12:52:48,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:52:48,525 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:48,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 28 Unchecked, 0.2s Time] [2022-11-20 12:52:48,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-11-20 12:52:48,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2022-11-20 12:52:48,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 624 states have (on average 2.4759615384615383) internal successors, (1545), 627 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:48,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1545 transitions. [2022-11-20 12:52:48,533 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1545 transitions. Word has length 25 [2022-11-20 12:52:48,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:48,533 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1545 transitions. [2022-11-20 12:52:48,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:48,533 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1545 transitions. [2022-11-20 12:52:48,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:52:48,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:48,534 INFO L195 NwaCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:52:48,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2022-11-20 12:52:48,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:48,738 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:52:48,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:48,738 INFO L85 PathProgramCache]: Analyzing trace with hash 544966844, now seen corresponding path program 1 times [2022-11-20 12:52:48,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:52:48,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711496787] [2022-11-20 12:52:48,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:52:48,738 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:48,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:52:48,739 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:52:48,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2022-11-20 12:52:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:52:49,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-20 12:52:49,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:52:49,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:52:49,439 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-20 12:52:49,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-11-20 12:52:49,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 126 [2022-11-20 12:52:49,541 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-20 12:52:49,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 12:52:51,947 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:52:51,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:52:58,989 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:52:58,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:52:58,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711496787] [2022-11-20 12:52:58,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711496787] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:52:58,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:52:58,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 36 [2022-11-20 12:52:58,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118318456] [2022-11-20 12:52:58,989 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:52:58,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-20 12:52:58,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:52:58,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-20 12:52:58,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1056, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 12:52:58,990 INFO L87 Difference]: Start difference. First operand 628 states and 1545 transitions. Second operand has 38 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:21,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:53:21,390 INFO L93 Difference]: Finished difference Result 1475 states and 3829 transitions. [2022-11-20 12:53:21,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-20 12:53:21,392 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:53:21,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:53:21,394 INFO L225 Difference]: With dead ends: 1475 [2022-11-20 12:53:21,394 INFO L226 Difference]: Without dead ends: 1469 [2022-11-20 12:53:21,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=1296, Invalid=3126, Unknown=0, NotChecked=0, Total=4422 [2022-11-20 12:53:21,395 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 466 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 2656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1152 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:53:21,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 107 Invalid, 2656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1312 Invalid, 0 Unknown, 1152 Unchecked, 5.4s Time] [2022-11-20 12:53:21,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2022-11-20 12:53:21,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 628. [2022-11-20 12:53:21,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 624 states have (on average 2.4759615384615383) internal successors, (1545), 627 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:21,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1545 transitions. [2022-11-20 12:53:21,406 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1545 transitions. Word has length 25 [2022-11-20 12:53:21,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:53:21,406 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1545 transitions. [2022-11-20 12:53:21,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:21,406 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1545 transitions. [2022-11-20 12:53:21,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:53:21,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:53:21,408 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:53:21,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (72)] Ended with exit code 0 [2022-11-20 12:53:21,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:21,608 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:53:21,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:53:21,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1233967288, now seen corresponding path program 1 times [2022-11-20 12:53:21,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:53:21,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694780230] [2022-11-20 12:53:21,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:53:21,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:21,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:53:21,610 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:53:21,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2022-11-20 12:53:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:53:21,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:53:21,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:53:22,017 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:53:22,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:53:22,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:53:22,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:53:22,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:53:22,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694780230] [2022-11-20 12:53:22,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694780230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:53:22,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:53:22,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:53:22,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79397105] [2022-11-20 12:53:22,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:53:22,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:53:22,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:53:22,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:53:22,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:53:22,066 INFO L87 Difference]: Start difference. First operand 628 states and 1545 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:22,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:53:22,601 INFO L93 Difference]: Finished difference Result 679 states and 1632 transitions. [2022-11-20 12:53:22,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:53:22,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:53:22,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:53:22,604 INFO L225 Difference]: With dead ends: 679 [2022-11-20 12:53:22,604 INFO L226 Difference]: Without dead ends: 625 [2022-11-20 12:53:22,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:53:22,604 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 15 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:53:22,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 3 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 69 Unchecked, 0.5s Time] [2022-11-20 12:53:22,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-11-20 12:53:22,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 625. [2022-11-20 12:53:22,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 621 states have (on average 2.418679549114332) internal successors, (1502), 624 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:22,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1502 transitions. [2022-11-20 12:53:22,612 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1502 transitions. Word has length 26 [2022-11-20 12:53:22,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:53:22,612 INFO L495 AbstractCegarLoop]: Abstraction has 625 states and 1502 transitions. [2022-11-20 12:53:22,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:22,612 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1502 transitions. [2022-11-20 12:53:22,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:53:22,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:53:22,613 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:53:22,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (73)] Ended with exit code 0 [2022-11-20 12:53:22,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:22,814 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:53:22,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:53:22,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1316286834, now seen corresponding path program 2 times [2022-11-20 12:53:22,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:53:22,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178613582] [2022-11-20 12:53:22,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:53:22,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:22,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:53:22,815 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:53:22,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2022-11-20 12:53:23,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:53:23,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:53:23,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:53:23,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:53:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:53:23,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:53:23,502 INFO L321 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2022-11-20 12:53:23,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 27 [2022-11-20 12:53:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:53:23,596 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:53:23,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178613582] [2022-11-20 12:53:23,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178613582] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:53:23,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:53:23,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2022-11-20 12:53:23,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396211687] [2022-11-20 12:53:23,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:53:23,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:53:23,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:53:23,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:53:23,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:53:23,598 INFO L87 Difference]: Start difference. First operand 625 states and 1502 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:24,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:53:24,284 INFO L93 Difference]: Finished difference Result 764 states and 1914 transitions. [2022-11-20 12:53:24,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:53:24,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:53:24,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:53:24,287 INFO L225 Difference]: With dead ends: 764 [2022-11-20 12:53:24,287 INFO L226 Difference]: Without dead ends: 682 [2022-11-20 12:53:24,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:53:24,290 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 17 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:53:24,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:53:24,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-11-20 12:53:24,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 654. [2022-11-20 12:53:24,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 650 states have (on average 2.5184615384615383) internal successors, (1637), 653 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:24,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1637 transitions. [2022-11-20 12:53:24,303 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1637 transitions. Word has length 26 [2022-11-20 12:53:24,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:53:24,303 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 1637 transitions. [2022-11-20 12:53:24,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:24,303 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1637 transitions. [2022-11-20 12:53:24,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:53:24,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:53:24,304 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:53:24,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2022-11-20 12:53:24,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:24,505 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:53:24,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:53:24,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1254304268, now seen corresponding path program 3 times [2022-11-20 12:53:24,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:53:24,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998284230] [2022-11-20 12:53:24,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:53:24,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:24,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:53:24,507 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:53:24,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2022-11-20 12:53:24,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:53:24,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:53:24,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:53:24,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:53:25,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:53:25,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:53:25,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:53:25,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:53:25,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998284230] [2022-11-20 12:53:25,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998284230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:53:25,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:53:25,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-20 12:53:25,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711806844] [2022-11-20 12:53:25,934 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:53:25,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:53:25,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:53:25,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:53:25,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:53:25,935 INFO L87 Difference]: Start difference. First operand 654 states and 1637 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:27,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:53:27,322 INFO L93 Difference]: Finished difference Result 819 states and 1933 transitions. [2022-11-20 12:53:27,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:53:27,323 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:53:27,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:53:27,325 INFO L225 Difference]: With dead ends: 819 [2022-11-20 12:53:27,325 INFO L226 Difference]: Without dead ends: 778 [2022-11-20 12:53:27,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:53:27,325 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 153 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:53:27,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 7 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 12:53:27,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2022-11-20 12:53:27,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 694. [2022-11-20 12:53:27,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 687 states have (on average 2.499272197962154) internal successors, (1717), 693 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:27,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1717 transitions. [2022-11-20 12:53:27,336 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1717 transitions. Word has length 26 [2022-11-20 12:53:27,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:53:27,336 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 1717 transitions. [2022-11-20 12:53:27,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:27,336 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1717 transitions. [2022-11-20 12:53:27,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:53:27,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:53:27,338 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:53:27,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2022-11-20 12:53:27,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:27,555 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:53:27,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:53:27,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2105170834, now seen corresponding path program 6 times [2022-11-20 12:53:27,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:53:27,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648978446] [2022-11-20 12:53:27,555 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 12:53:27,555 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:27,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:53:27,556 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:53:27,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2022-11-20 12:53:27,951 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-20 12:53:27,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:53:27,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:53:27,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:53:28,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:53:28,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:53:28,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:53:28,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [648978446] [2022-11-20 12:53:28,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [648978446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:53:28,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:53:28,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:53:28,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389712714] [2022-11-20 12:53:28,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:53:28,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:53:28,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:53:28,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:53:28,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:53:28,730 INFO L87 Difference]: Start difference. First operand 694 states and 1717 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:29,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:53:29,228 INFO L93 Difference]: Finished difference Result 710 states and 1738 transitions. [2022-11-20 12:53:29,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:53:29,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:53:29,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:53:29,231 INFO L225 Difference]: With dead ends: 710 [2022-11-20 12:53:29,231 INFO L226 Difference]: Without dead ends: 698 [2022-11-20 12:53:29,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:53:29,232 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 10 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:53:29,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 4 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 83 Unchecked, 0.5s Time] [2022-11-20 12:53:29,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2022-11-20 12:53:29,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 686. [2022-11-20 12:53:29,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 679 states have (on average 2.4933726067746687) internal successors, (1693), 685 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:29,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1693 transitions. [2022-11-20 12:53:29,241 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1693 transitions. Word has length 26 [2022-11-20 12:53:29,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:53:29,241 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 1693 transitions. [2022-11-20 12:53:29,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:29,241 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1693 transitions. [2022-11-20 12:53:29,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:53:29,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:53:29,242 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:53:29,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (76)] Ended with exit code 0 [2022-11-20 12:53:29,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:29,443 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:53:29,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:53:29,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1648549962, now seen corresponding path program 7 times [2022-11-20 12:53:29,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:53:29,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680157787] [2022-11-20 12:53:29,443 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 12:53:29,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:29,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:53:29,444 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:53:29,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2022-11-20 12:53:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:53:29,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:53:29,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:53:30,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:53:30,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:53:30,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:53:30,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680157787] [2022-11-20 12:53:30,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680157787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:53:30,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:53:30,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:53:30,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267313550] [2022-11-20 12:53:30,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:53:30,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:53:30,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:53:30,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:53:30,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:53:30,314 INFO L87 Difference]: Start difference. First operand 686 states and 1693 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:30,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:53:30,863 INFO L93 Difference]: Finished difference Result 705 states and 1718 transitions. [2022-11-20 12:53:30,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:53:30,864 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:53:30,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:53:30,865 INFO L225 Difference]: With dead ends: 705 [2022-11-20 12:53:30,865 INFO L226 Difference]: Without dead ends: 698 [2022-11-20 12:53:30,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:53:30,866 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:53:30,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 4 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 89 Unchecked, 0.5s Time] [2022-11-20 12:53:30,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2022-11-20 12:53:30,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 690. [2022-11-20 12:53:30,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 683 states have (on average 2.487554904831625) internal successors, (1699), 689 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:30,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1699 transitions. [2022-11-20 12:53:30,874 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1699 transitions. Word has length 26 [2022-11-20 12:53:30,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:53:30,874 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 1699 transitions. [2022-11-20 12:53:30,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:30,874 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1699 transitions. [2022-11-20 12:53:30,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:53:30,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:53:30,875 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:53:30,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (77)] Ended with exit code 0 [2022-11-20 12:53:31,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:31,076 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:53:31,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:53:31,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1601687906, now seen corresponding path program 8 times [2022-11-20 12:53:31,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:53:31,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207697021] [2022-11-20 12:53:31,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:53:31,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:31,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:53:31,077 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:53:31,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2022-11-20 12:53:31,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:53:31,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:53:31,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:53:31,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:53:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:53:31,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:53:31,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:53:31,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207697021] [2022-11-20 12:53:31,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207697021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:53:31,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:53:31,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:53:31,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78810608] [2022-11-20 12:53:31,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:53:31,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:53:31,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:53:31,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:53:31,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:53:31,949 INFO L87 Difference]: Start difference. First operand 690 states and 1699 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:32,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:53:32,532 INFO L93 Difference]: Finished difference Result 717 states and 1743 transitions. [2022-11-20 12:53:32,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:53:32,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:53:32,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:53:32,535 INFO L225 Difference]: With dead ends: 717 [2022-11-20 12:53:32,535 INFO L226 Difference]: Without dead ends: 659 [2022-11-20 12:53:32,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:53:32,535 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:53:32,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 4 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 146 Unchecked, 0.6s Time] [2022-11-20 12:53:32,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-11-20 12:53:32,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 652. [2022-11-20 12:53:32,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 645 states have (on average 2.496124031007752) internal successors, (1610), 651 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:32,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1610 transitions. [2022-11-20 12:53:32,545 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1610 transitions. Word has length 26 [2022-11-20 12:53:32,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:53:32,546 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 1610 transitions. [2022-11-20 12:53:32,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:32,546 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1610 transitions. [2022-11-20 12:53:32,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:53:32,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:53:32,547 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:53:32,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2022-11-20 12:53:32,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:32,747 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:53:32,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:53:32,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2146483816, now seen corresponding path program 9 times [2022-11-20 12:53:32,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:53:32,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697002106] [2022-11-20 12:53:32,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:53:32,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:32,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:53:32,749 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:53:32,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2022-11-20 12:53:33,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:53:33,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:53:33,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:53:33,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:53:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:53:33,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:53:33,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:53:33,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697002106] [2022-11-20 12:53:33,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697002106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:53:33,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:53:33,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:53:33,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295957712] [2022-11-20 12:53:33,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:53:33,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:53:33,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:53:33,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:53:33,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:53:33,296 INFO L87 Difference]: Start difference. First operand 652 states and 1610 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:33,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:53:33,788 INFO L93 Difference]: Finished difference Result 713 states and 1733 transitions. [2022-11-20 12:53:33,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:53:33,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:53:33,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:53:33,791 INFO L225 Difference]: With dead ends: 713 [2022-11-20 12:53:33,791 INFO L226 Difference]: Without dead ends: 673 [2022-11-20 12:53:33,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:53:33,792 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 12 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:53:33,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:53:33,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-11-20 12:53:33,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 625. [2022-11-20 12:53:33,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 618 states have (on average 2.4789644012944985) internal successors, (1532), 624 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:33,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1532 transitions. [2022-11-20 12:53:33,801 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1532 transitions. Word has length 26 [2022-11-20 12:53:33,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:53:33,801 INFO L495 AbstractCegarLoop]: Abstraction has 625 states and 1532 transitions. [2022-11-20 12:53:33,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:33,801 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1532 transitions. [2022-11-20 12:53:33,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:53:33,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:53:33,802 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:53:33,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2022-11-20 12:53:34,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:34,003 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:53:34,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:53:34,003 INFO L85 PathProgramCache]: Analyzing trace with hash -515349980, now seen corresponding path program 10 times [2022-11-20 12:53:34,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:53:34,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777013419] [2022-11-20 12:53:34,003 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:53:34,004 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:34,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:53:34,004 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:53:34,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2022-11-20 12:53:34,394 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:53:34,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:53:34,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:53:34,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:53:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:53:34,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:53:36,084 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:53:36,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:53:36,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777013419] [2022-11-20 12:53:36,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777013419] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:53:36,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:53:36,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2022-11-20 12:53:36,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460200618] [2022-11-20 12:53:36,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:53:36,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:53:36,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:53:36,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:53:36,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:53:36,086 INFO L87 Difference]: Start difference. First operand 625 states and 1532 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:41,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:53:41,786 INFO L93 Difference]: Finished difference Result 1639 states and 4588 transitions. [2022-11-20 12:53:41,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:53:41,787 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:53:41,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:53:41,790 INFO L225 Difference]: With dead ends: 1639 [2022-11-20 12:53:41,790 INFO L226 Difference]: Without dead ends: 1600 [2022-11-20 12:53:41,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=267, Invalid=489, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:53:41,791 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 320 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:53:41,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 11 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 512 Invalid, 0 Unknown, 170 Unchecked, 2.4s Time] [2022-11-20 12:53:41,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2022-11-20 12:53:41,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1016. [2022-11-20 12:53:41,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1009 states have (on average 2.848364717542121) internal successors, (2874), 1015 states have internal predecessors, (2874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:41,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 2874 transitions. [2022-11-20 12:53:41,811 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 2874 transitions. Word has length 26 [2022-11-20 12:53:41,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:53:41,811 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 2874 transitions. [2022-11-20 12:53:41,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:41,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 2874 transitions. [2022-11-20 12:53:41,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:53:41,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:53:41,813 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:53:41,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2022-11-20 12:53:42,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:42,013 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:53:42,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:53:42,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1042010078, now seen corresponding path program 1 times [2022-11-20 12:53:42,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:53:42,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124312071] [2022-11-20 12:53:42,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:53:42,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:42,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:53:42,015 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:53:42,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2022-11-20 12:53:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:53:42,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 12:53:42,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:53:42,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 12:53:42,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:53:43,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:53:43,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:53:43,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:53:43,438 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:53:43,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:53:43,491 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:53:43,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:53:43,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:53:43,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124312071] [2022-11-20 12:53:43,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124312071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:53:43,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:53:43,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:53:43,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001656616] [2022-11-20 12:53:43,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:53:43,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:53:43,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:53:43,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:53:43,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:53:43,492 INFO L87 Difference]: Start difference. First operand 1016 states and 2874 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:43,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:53:43,591 INFO L93 Difference]: Finished difference Result 1085 states and 3129 transitions. [2022-11-20 12:53:43,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:53:43,592 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:53:43,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:53:43,594 INFO L225 Difference]: With dead ends: 1085 [2022-11-20 12:53:43,594 INFO L226 Difference]: Without dead ends: 1085 [2022-11-20 12:53:43,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:53:43,595 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:53:43,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 115 Unchecked, 0.1s Time] [2022-11-20 12:53:43,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-11-20 12:53:43,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1070. [2022-11-20 12:53:43,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 1063 states have (on average 2.8871119473189086) internal successors, (3069), 1069 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:43,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 3069 transitions. [2022-11-20 12:53:43,614 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 3069 transitions. Word has length 26 [2022-11-20 12:53:43,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:53:43,615 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 3069 transitions. [2022-11-20 12:53:43,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:43,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 3069 transitions. [2022-11-20 12:53:43,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:53:43,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:53:43,616 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:53:43,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2022-11-20 12:53:43,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:43,818 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:53:43,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:53:43,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1439620632, now seen corresponding path program 2 times [2022-11-20 12:53:43,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:53:43,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476796601] [2022-11-20 12:53:43,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:53:43,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:43,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:53:43,821 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:53:43,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2022-11-20 12:53:44,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:53:44,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:53:44,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 12:53:44,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:53:44,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 12:53:44,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:53:44,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:53:44,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:53:45,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:53:45,290 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:53:45,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:53:45,349 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:53:45,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:53:45,536 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3506 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3506) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:53:45,578 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3506 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_3505 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3505) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3506) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:53:46,086 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:53:46,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 3155 treesize of output 2888 [2022-11-20 12:53:46,336 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:53:46,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 2840 treesize of output 2645 [2022-11-20 12:53:46,369 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:53:46,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2566 treesize of output 2134 [2022-11-20 12:53:46,404 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:53:46,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2134 treesize of output 1270 [2022-11-20 12:53:50,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:53:50,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:53:50,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476796601] [2022-11-20 12:53:50,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476796601] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:53:50,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:53:50,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-20 12:53:50,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985071339] [2022-11-20 12:53:50,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:53:50,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:53:50,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:53:50,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:53:50,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=145, Unknown=2, NotChecked=50, Total=240 [2022-11-20 12:53:50,062 INFO L87 Difference]: Start difference. First operand 1070 states and 3069 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:50,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:53:50,873 INFO L93 Difference]: Finished difference Result 1152 states and 3318 transitions. [2022-11-20 12:53:50,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:53:50,875 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:53:50,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:53:50,877 INFO L225 Difference]: With dead ends: 1152 [2022-11-20 12:53:50,877 INFO L226 Difference]: Without dead ends: 1143 [2022-11-20 12:53:50,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=64, Invalid=214, Unknown=2, NotChecked=62, Total=342 [2022-11-20 12:53:50,877 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 24 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:53:50,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 9 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 179 Unchecked, 0.3s Time] [2022-11-20 12:53:50,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2022-11-20 12:53:50,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1093. [2022-11-20 12:53:50,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1086 states have (on average 2.894106813996317) internal successors, (3143), 1092 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:50,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 3143 transitions. [2022-11-20 12:53:50,894 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 3143 transitions. Word has length 26 [2022-11-20 12:53:50,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:53:50,894 INFO L495 AbstractCegarLoop]: Abstraction has 1093 states and 3143 transitions. [2022-11-20 12:53:50,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:50,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 3143 transitions. [2022-11-20 12:53:50,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:53:50,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:53:50,896 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:53:50,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (82)] Ended with exit code 0 [2022-11-20 12:53:51,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:51,096 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:53:51,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:53:51,096 INFO L85 PathProgramCache]: Analyzing trace with hash -366253500, now seen corresponding path program 3 times [2022-11-20 12:53:51,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:53:51,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945799193] [2022-11-20 12:53:51,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:53:51,097 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:51,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:53:51,098 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:53:51,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2022-11-20 12:53:51,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:53:51,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:53:51,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:53:51,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:53:51,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 144 [2022-11-20 12:53:52,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:53:52,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:53:52,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:53:52,555 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:53:52,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:53:52,621 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:53:52,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:53:52,865 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3557 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3557) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:53:52,922 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3557 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_3556 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3556) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3557) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:53:53,220 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:53:53,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 232 treesize of output 210 [2022-11-20 12:53:53,241 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:53:53,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 97 [2022-11-20 12:53:53,259 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:53:53,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 70 [2022-11-20 12:53:53,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:53:53,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:53:53,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945799193] [2022-11-20 12:53:53,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945799193] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:53:53,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:53:53,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 12:53:53,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497527399] [2022-11-20 12:53:53,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:53:53,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:53:53,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:53:53,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:53:53,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=104, Unknown=2, NotChecked=42, Total=182 [2022-11-20 12:53:53,717 INFO L87 Difference]: Start difference. First operand 1093 states and 3143 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:54,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:53:54,317 INFO L93 Difference]: Finished difference Result 1227 states and 3466 transitions. [2022-11-20 12:53:54,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:53:54,318 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:53:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:53:54,321 INFO L225 Difference]: With dead ends: 1227 [2022-11-20 12:53:54,321 INFO L226 Difference]: Without dead ends: 1223 [2022-11-20 12:53:54,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=46, Invalid=142, Unknown=2, NotChecked=50, Total=240 [2022-11-20 12:53:54,321 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:53:54,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 10 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 169 Unchecked, 0.3s Time] [2022-11-20 12:53:54,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-11-20 12:53:54,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1158. [2022-11-20 12:53:54,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1151 states have (on average 2.8792354474370114) internal successors, (3314), 1157 states have internal predecessors, (3314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:54,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 3314 transitions. [2022-11-20 12:53:54,337 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 3314 transitions. Word has length 26 [2022-11-20 12:53:54,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:53:54,337 INFO L495 AbstractCegarLoop]: Abstraction has 1158 states and 3314 transitions. [2022-11-20 12:53:54,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:54,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 3314 transitions. [2022-11-20 12:53:54,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:53:54,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:53:54,339 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:53:54,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (83)] Ended with exit code 0 [2022-11-20 12:53:54,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:54,539 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:53:54,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:53:54,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1252189678, now seen corresponding path program 4 times [2022-11-20 12:53:54,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:53:54,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78131888] [2022-11-20 12:53:54,540 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:53:54,540 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:54,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:53:54,541 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:53:54,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2022-11-20 12:53:55,068 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:53:55,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:53:55,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:53:55,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:53:55,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 84 [2022-11-20 12:53:55,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:53:55,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:53:55,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:53:55,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:53:55,931 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:53:55,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:53:55,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:53:55,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:53:56,161 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3609 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3609) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:53:56,214 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3609 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_3608 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3608) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3609) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:53:56,701 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:53:56,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 851 treesize of output 794 [2022-11-20 12:53:56,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 688 treesize of output 472 [2022-11-20 12:53:56,975 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:53:56,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 530 treesize of output 497 [2022-11-20 12:53:56,999 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:53:56,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 418 treesize of output 310 [2022-11-20 12:53:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:53:58,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:53:58,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78131888] [2022-11-20 12:53:58,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78131888] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:53:58,972 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:53:58,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-11-20 12:53:58,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723884941] [2022-11-20 12:53:58,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:53:58,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:53:58,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:53:58,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:53:58,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=124, Unknown=2, NotChecked=46, Total=210 [2022-11-20 12:53:58,973 INFO L87 Difference]: Start difference. First operand 1158 states and 3314 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:59,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:53:59,415 INFO L93 Difference]: Finished difference Result 1230 states and 3475 transitions. [2022-11-20 12:53:59,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:53:59,416 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:53:59,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:53:59,419 INFO L225 Difference]: With dead ends: 1230 [2022-11-20 12:53:59,419 INFO L226 Difference]: Without dead ends: 1227 [2022-11-20 12:53:59,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=165, Unknown=2, NotChecked=54, Total=272 [2022-11-20 12:53:59,420 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:53:59,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 11 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 152 Unchecked, 0.1s Time] [2022-11-20 12:53:59,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2022-11-20 12:53:59,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1158. [2022-11-20 12:53:59,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1151 states have (on average 2.8774978279756733) internal successors, (3312), 1157 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:59,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 3312 transitions. [2022-11-20 12:53:59,444 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 3312 transitions. Word has length 26 [2022-11-20 12:53:59,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:53:59,444 INFO L495 AbstractCegarLoop]: Abstraction has 1158 states and 3312 transitions. [2022-11-20 12:53:59,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:53:59,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 3312 transitions. [2022-11-20 12:53:59,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:53:59,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:53:59,447 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:53:59,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2022-11-20 12:53:59,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:59,663 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:53:59,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:53:59,663 INFO L85 PathProgramCache]: Analyzing trace with hash 64199330, now seen corresponding path program 5 times [2022-11-20 12:53:59,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:53:59,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414800037] [2022-11-20 12:53:59,664 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:53:59,664 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:53:59,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:53:59,666 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:53:59,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2022-11-20 12:54:00,300 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:54:00,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:54:00,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 12:54:00,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:54:00,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2022-11-20 12:54:01,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:54:01,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:01,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:02,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 19 [2022-11-20 12:54:02,138 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:54:02,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:54:03,162 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:54:03,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 232 treesize of output 210 [2022-11-20 12:54:03,186 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:03,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 97 [2022-11-20 12:54:03,207 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:03,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 70 [2022-11-20 12:54:04,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:54:04,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:54:04,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414800037] [2022-11-20 12:54:04,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414800037] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:54:04,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:54:04,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 12:54:04,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333284264] [2022-11-20 12:54:04,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:54:04,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:54:04,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:54:04,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:54:04,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=295, Unknown=8, NotChecked=0, Total=380 [2022-11-20 12:54:04,932 INFO L87 Difference]: Start difference. First operand 1158 states and 3312 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:07,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:54:07,514 INFO L93 Difference]: Finished difference Result 1817 states and 5216 transitions. [2022-11-20 12:54:07,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:54:07,515 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:54:07,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:54:07,518 INFO L225 Difference]: With dead ends: 1817 [2022-11-20 12:54:07,518 INFO L226 Difference]: Without dead ends: 1817 [2022-11-20 12:54:07,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=109, Invalid=435, Unknown=8, NotChecked=0, Total=552 [2022-11-20 12:54:07,519 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 10 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:54:07,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 11 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 202 Invalid, 0 Unknown, 137 Unchecked, 1.2s Time] [2022-11-20 12:54:07,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1817 states. [2022-11-20 12:54:07,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1817 to 1405. [2022-11-20 12:54:07,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1398 states have (on average 2.8583690987124464) internal successors, (3996), 1404 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:07,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 3996 transitions. [2022-11-20 12:54:07,549 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 3996 transitions. Word has length 26 [2022-11-20 12:54:07,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:54:07,550 INFO L495 AbstractCegarLoop]: Abstraction has 1405 states and 3996 transitions. [2022-11-20 12:54:07,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:07,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 3996 transitions. [2022-11-20 12:54:07,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:54:07,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:54:07,553 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:54:07,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (85)] Ended with exit code 0 [2022-11-20 12:54:07,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:07,758 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:54:07,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:54:07,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1638683580, now seen corresponding path program 6 times [2022-11-20 12:54:07,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:54:07,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074732217] [2022-11-20 12:54:07,759 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 12:54:07,760 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:07,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:54:07,760 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:54:07,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2022-11-20 12:54:08,349 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-20 12:54:08,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:54:08,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:54:08,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:54:08,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 242 [2022-11-20 12:54:08,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:54:08,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:54:08,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:08,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:09,141 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:09,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:54:09,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:54:09,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:54:09,377 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3712 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3712) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:54:09,422 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3711 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_3712 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (_ bv0 32) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3711) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3712) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset))))))) is different from false [2022-11-20 12:54:09,960 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:54:09,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 3155 treesize of output 2888 [2022-11-20 12:54:10,229 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:54:10,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 2840 treesize of output 2645 [2022-11-20 12:54:10,263 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:10,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2566 treesize of output 1702 [2022-11-20 12:54:10,294 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:10,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1702 treesize of output 1270 [2022-11-20 12:54:12,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:54:12,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:54:12,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074732217] [2022-11-20 12:54:12,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074732217] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:54:12,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:54:12,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-11-20 12:54:12,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482793148] [2022-11-20 12:54:12,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:54:12,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:54:12,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:54:12,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:54:12,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=124, Unknown=2, NotChecked=46, Total=210 [2022-11-20 12:54:12,879 INFO L87 Difference]: Start difference. First operand 1405 states and 3996 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:13,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:54:13,618 INFO L93 Difference]: Finished difference Result 1517 states and 4222 transitions. [2022-11-20 12:54:13,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:54:13,620 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:54:13,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:54:13,622 INFO L225 Difference]: With dead ends: 1517 [2022-11-20 12:54:13,622 INFO L226 Difference]: Without dead ends: 1492 [2022-11-20 12:54:13,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=51, Invalid=165, Unknown=2, NotChecked=54, Total=272 [2022-11-20 12:54:13,622 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 17 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:54:13,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 11 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 261 Unchecked, 0.3s Time] [2022-11-20 12:54:13,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2022-11-20 12:54:13,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1328. [2022-11-20 12:54:13,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1321 states have (on average 2.8561695685087054) internal successors, (3773), 1327 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:13,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 3773 transitions. [2022-11-20 12:54:13,642 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 3773 transitions. Word has length 26 [2022-11-20 12:54:13,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:54:13,642 INFO L495 AbstractCegarLoop]: Abstraction has 1328 states and 3773 transitions. [2022-11-20 12:54:13,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:13,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 3773 transitions. [2022-11-20 12:54:13,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:54:13,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:54:13,644 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:54:13,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2022-11-20 12:54:13,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:13,845 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:54:13,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:54:13,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1825144446, now seen corresponding path program 7 times [2022-11-20 12:54:13,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:54:13,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872403004] [2022-11-20 12:54:13,845 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 12:54:13,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:13,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:54:13,847 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:54:13,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2022-11-20 12:54:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:54:14,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 12:54:14,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:54:14,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 12:54:14,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:54:14,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:14,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:15,191 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:15,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:54:15,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:54:15,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:54:15,436 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3766 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3766) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:54:15,479 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3766 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_3765 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3765) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3766) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:54:15,694 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:54:15,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 232 treesize of output 210 [2022-11-20 12:54:15,712 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:15,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 97 [2022-11-20 12:54:15,730 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:15,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 70 [2022-11-20 12:54:16,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:54:16,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:54:16,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872403004] [2022-11-20 12:54:16,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872403004] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:54:16,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:54:16,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 12:54:16,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26551834] [2022-11-20 12:54:16,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:54:16,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:54:16,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:54:16,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:54:16,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=104, Unknown=2, NotChecked=42, Total=182 [2022-11-20 12:54:16,262 INFO L87 Difference]: Start difference. First operand 1328 states and 3773 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:16,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:54:16,855 INFO L93 Difference]: Finished difference Result 1391 states and 3917 transitions. [2022-11-20 12:54:16,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:54:16,857 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:54:16,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:54:16,859 INFO L225 Difference]: With dead ends: 1391 [2022-11-20 12:54:16,859 INFO L226 Difference]: Without dead ends: 1383 [2022-11-20 12:54:16,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=46, Invalid=142, Unknown=2, NotChecked=50, Total=240 [2022-11-20 12:54:16,859 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:54:16,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 10 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 134 Unchecked, 0.3s Time] [2022-11-20 12:54:16,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2022-11-20 12:54:16,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1310. [2022-11-20 12:54:16,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1303 states have (on average 2.861089792785879) internal successors, (3728), 1309 states have internal predecessors, (3728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:16,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 3728 transitions. [2022-11-20 12:54:16,878 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 3728 transitions. Word has length 26 [2022-11-20 12:54:16,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:54:16,878 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 3728 transitions. [2022-11-20 12:54:16,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:16,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 3728 transitions. [2022-11-20 12:54:16,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:54:16,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:54:16,880 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:54:16,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2022-11-20 12:54:17,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:17,081 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:54:17,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:54:17,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1501533430, now seen corresponding path program 8 times [2022-11-20 12:54:17,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:54:17,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797315162] [2022-11-20 12:54:17,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:54:17,082 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:17,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:54:17,082 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:54:17,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2022-11-20 12:54:17,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:54:17,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:54:17,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 12:54:17,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:54:17,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 12:54:18,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:54:18,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:18,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:54:18,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:18,615 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:18,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:54:18,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:54:18,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:54:18,832 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3821 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3821) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:54:18,884 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3821 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_3820 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3820) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3821) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:54:19,130 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:54:19,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 232 treesize of output 210 [2022-11-20 12:54:19,150 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:19,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 97 [2022-11-20 12:54:19,167 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:19,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 70 [2022-11-20 12:54:19,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2022-11-20 12:54:19,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:54:19,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797315162] [2022-11-20 12:54:19,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797315162] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:54:19,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:54:19,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 12:54:19,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686216219] [2022-11-20 12:54:19,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:54:19,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:54:19,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:54:19,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:54:19,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=104, Unknown=2, NotChecked=42, Total=182 [2022-11-20 12:54:19,735 INFO L87 Difference]: Start difference. First operand 1310 states and 3728 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:20,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:54:20,436 INFO L93 Difference]: Finished difference Result 1414 states and 3961 transitions. [2022-11-20 12:54:20,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:54:20,438 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:54:20,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:54:20,440 INFO L225 Difference]: With dead ends: 1414 [2022-11-20 12:54:20,440 INFO L226 Difference]: Without dead ends: 1412 [2022-11-20 12:54:20,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=46, Invalid=142, Unknown=2, NotChecked=50, Total=240 [2022-11-20 12:54:20,440 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:54:20,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 101 Unchecked, 0.3s Time] [2022-11-20 12:54:20,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2022-11-20 12:54:20,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1355. [2022-11-20 12:54:20,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1348 states have (on average 2.8390207715133533) internal successors, (3827), 1354 states have internal predecessors, (3827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:20,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 3827 transitions. [2022-11-20 12:54:20,459 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 3827 transitions. Word has length 26 [2022-11-20 12:54:20,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:54:20,459 INFO L495 AbstractCegarLoop]: Abstraction has 1355 states and 3827 transitions. [2022-11-20 12:54:20,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:20,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 3827 transitions. [2022-11-20 12:54:20,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:54:20,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:54:20,461 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:54:20,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (88)] Ended with exit code 0 [2022-11-20 12:54:20,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:20,662 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:54:20,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:54:20,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1864391108, now seen corresponding path program 9 times [2022-11-20 12:54:20,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:54:20,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792776084] [2022-11-20 12:54:20,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:54:20,662 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:20,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:54:20,663 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:54:20,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2022-11-20 12:54:21,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:54:21,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:54:21,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:54:21,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:54:21,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2022-11-20 12:54:21,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:54:21,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:54:21,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:21,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:22,070 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:22,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:54:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:54:22,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:54:22,294 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3873 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3873) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:54:22,347 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3872 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_3873 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3872) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3873) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:54:22,856 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:54:22,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 851 treesize of output 794 [2022-11-20 12:54:22,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 688 treesize of output 580 [2022-11-20 12:54:22,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 580 treesize of output 364 [2022-11-20 12:54:23,114 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:54:23,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 422 treesize of output 389 [2022-11-20 12:54:24,985 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2022-11-20 12:54:24,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:54:24,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792776084] [2022-11-20 12:54:24,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792776084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:54:24,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:54:24,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-11-20 12:54:24,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738238035] [2022-11-20 12:54:24,986 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:54:24,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:54:24,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:54:24,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:54:24,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=124, Unknown=2, NotChecked=46, Total=210 [2022-11-20 12:54:24,987 INFO L87 Difference]: Start difference. First operand 1355 states and 3827 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:25,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:54:25,507 INFO L93 Difference]: Finished difference Result 1405 states and 3945 transitions. [2022-11-20 12:54:25,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:54:25,508 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:54:25,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:54:25,511 INFO L225 Difference]: With dead ends: 1405 [2022-11-20 12:54:25,511 INFO L226 Difference]: Without dead ends: 1402 [2022-11-20 12:54:25,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=45, Invalid=143, Unknown=2, NotChecked=50, Total=240 [2022-11-20 12:54:25,511 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:54:25,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 7 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 117 Unchecked, 0.3s Time] [2022-11-20 12:54:25,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2022-11-20 12:54:25,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1346. [2022-11-20 12:54:25,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1339 states have (on average 2.8439133681852127) internal successors, (3808), 1345 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:25,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 3808 transitions. [2022-11-20 12:54:25,533 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 3808 transitions. Word has length 26 [2022-11-20 12:54:25,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:54:25,533 INFO L495 AbstractCegarLoop]: Abstraction has 1346 states and 3808 transitions. [2022-11-20 12:54:25,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:25,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 3808 transitions. [2022-11-20 12:54:25,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:54:25,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:54:25,536 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:54:25,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2022-11-20 12:54:25,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:25,737 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:54:25,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:54:25,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1779562436, now seen corresponding path program 10 times [2022-11-20 12:54:25,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:54:25,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303636061] [2022-11-20 12:54:25,737 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:54:25,737 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:25,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:54:25,738 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:54:25,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2022-11-20 12:54:26,285 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:54:26,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:54:26,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:54:26,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:54:26,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2022-11-20 12:54:26,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:54:26,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:26,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:27,131 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:27,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:54:27,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:54:27,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:54:27,365 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3924 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3924) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:54:27,419 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3924 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_3923 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3923) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3924) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:54:27,649 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:54:27,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 232 treesize of output 210 [2022-11-20 12:54:27,667 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:27,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 97 [2022-11-20 12:54:27,681 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:27,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 70 [2022-11-20 12:54:28,196 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2022-11-20 12:54:28,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:54:28,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303636061] [2022-11-20 12:54:28,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303636061] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:54:28,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:54:28,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 12:54:28,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677587524] [2022-11-20 12:54:28,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:54:28,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:54:28,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:54:28,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:54:28,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=104, Unknown=2, NotChecked=42, Total=182 [2022-11-20 12:54:28,197 INFO L87 Difference]: Start difference. First operand 1346 states and 3808 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:28,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:54:28,899 INFO L93 Difference]: Finished difference Result 1465 states and 4052 transitions. [2022-11-20 12:54:28,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:54:28,901 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:54:28,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:54:28,903 INFO L225 Difference]: With dead ends: 1465 [2022-11-20 12:54:28,903 INFO L226 Difference]: Without dead ends: 1424 [2022-11-20 12:54:28,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=46, Invalid=142, Unknown=2, NotChecked=50, Total=240 [2022-11-20 12:54:28,904 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 15 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:54:28,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 9 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 261 Unchecked, 0.3s Time] [2022-11-20 12:54:28,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2022-11-20 12:54:28,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1304. [2022-11-20 12:54:28,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1297 states have (on average 2.866615265998458) internal successors, (3718), 1303 states have internal predecessors, (3718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:28,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 3718 transitions. [2022-11-20 12:54:28,923 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 3718 transitions. Word has length 26 [2022-11-20 12:54:28,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:54:28,924 INFO L495 AbstractCegarLoop]: Abstraction has 1304 states and 3718 transitions. [2022-11-20 12:54:28,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:28,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 3718 transitions. [2022-11-20 12:54:28,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:54:28,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:54:28,927 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:54:28,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2022-11-20 12:54:29,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:29,143 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:54:29,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:54:29,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1399814736, now seen corresponding path program 11 times [2022-11-20 12:54:29,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:54:29,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419212995] [2022-11-20 12:54:29,144 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:54:29,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:29,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:54:29,145 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:54:29,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2022-11-20 12:54:29,762 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:54:29,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:54:29,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-20 12:54:29,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:54:29,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 12:54:30,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:54:30,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2022-11-20 12:54:30,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2022-11-20 12:54:31,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 19 [2022-11-20 12:54:31,818 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:54:31,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:54:33,016 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:54:33,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 428 treesize of output 371 [2022-11-20 12:54:33,042 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:33,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 312 treesize of output 258 [2022-11-20 12:54:33,066 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:33,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 258 treesize of output 150 [2022-11-20 12:54:34,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:54:34,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:54:34,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419212995] [2022-11-20 12:54:34,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419212995] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:54:34,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:54:34,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 12:54:34,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315262112] [2022-11-20 12:54:34,891 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:54:34,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:54:34,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:54:34,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:54:34,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=295, Unknown=8, NotChecked=0, Total=380 [2022-11-20 12:54:34,893 INFO L87 Difference]: Start difference. First operand 1304 states and 3718 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:37,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:54:37,218 INFO L93 Difference]: Finished difference Result 1884 states and 5260 transitions. [2022-11-20 12:54:37,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 12:54:37,220 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:54:37,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:54:37,223 INFO L225 Difference]: With dead ends: 1884 [2022-11-20 12:54:37,223 INFO L226 Difference]: Without dead ends: 1878 [2022-11-20 12:54:37,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=103, Invalid=395, Unknown=8, NotChecked=0, Total=506 [2022-11-20 12:54:37,223 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 66 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 392 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:54:37,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 10 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 192 Invalid, 0 Unknown, 392 Unchecked, 1.1s Time] [2022-11-20 12:54:37,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2022-11-20 12:54:37,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1582. [2022-11-20 12:54:37,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1575 states have (on average 2.8666666666666667) internal successors, (4515), 1581 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:37,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 4515 transitions. [2022-11-20 12:54:37,250 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 4515 transitions. Word has length 26 [2022-11-20 12:54:37,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:54:37,250 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 4515 transitions. [2022-11-20 12:54:37,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:37,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 4515 transitions. [2022-11-20 12:54:37,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:54:37,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:54:37,254 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:54:37,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (91)] Forceful destruction successful, exit code 0 [2022-11-20 12:54:37,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:37,456 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:54:37,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:54:37,456 INFO L85 PathProgramCache]: Analyzing trace with hash 218628442, now seen corresponding path program 12 times [2022-11-20 12:54:37,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:54:37,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856346106] [2022-11-20 12:54:37,457 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 12:54:37,457 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:37,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:54:37,458 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:54:37,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2022-11-20 12:54:38,043 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-20 12:54:38,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:54:38,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 12:54:38,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:54:38,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 12:54:38,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:54:38,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:54:38,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:38,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:39,081 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:39,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:54:39,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:54:39,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:54:39,398 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4038 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (_ bv0 32) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_4038) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset))))))) is different from false [2022-11-20 12:54:39,436 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4037 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_4038 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_4037) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_4038) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:54:40,096 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:54:40,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 851 treesize of output 794 [2022-11-20 12:54:40,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 688 treesize of output 580 [2022-11-20 12:54:40,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 580 treesize of output 364 [2022-11-20 12:54:40,356 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:54:40,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 422 treesize of output 389 [2022-11-20 12:54:42,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:54:42,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:54:42,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856346106] [2022-11-20 12:54:42,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856346106] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:54:42,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:54:42,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-20 12:54:42,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237873459] [2022-11-20 12:54:42,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:54:42,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:54:42,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:54:42,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:54:42,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=145, Unknown=2, NotChecked=50, Total=240 [2022-11-20 12:54:42,123 INFO L87 Difference]: Start difference. First operand 1582 states and 4515 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:42,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:54:42,929 INFO L93 Difference]: Finished difference Result 1667 states and 4710 transitions. [2022-11-20 12:54:42,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:54:42,930 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:54:42,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:54:42,933 INFO L225 Difference]: With dead ends: 1667 [2022-11-20 12:54:42,933 INFO L226 Difference]: Without dead ends: 1658 [2022-11-20 12:54:42,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=64, Invalid=214, Unknown=2, NotChecked=62, Total=342 [2022-11-20 12:54:42,934 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:54:42,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 9 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 107 Unchecked, 0.3s Time] [2022-11-20 12:54:42,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2022-11-20 12:54:42,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1585. [2022-11-20 12:54:42,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1578 states have (on average 2.8612167300380227) internal successors, (4515), 1584 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:42,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 4515 transitions. [2022-11-20 12:54:42,956 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 4515 transitions. Word has length 26 [2022-11-20 12:54:42,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:54:42,956 INFO L495 AbstractCegarLoop]: Abstraction has 1585 states and 4515 transitions. [2022-11-20 12:54:42,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:42,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 4515 transitions. [2022-11-20 12:54:42,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:54:42,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:54:42,959 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:54:42,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (92)] Ended with exit code 0 [2022-11-20 12:54:43,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:43,159 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:54:43,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:54:43,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2135515052, now seen corresponding path program 13 times [2022-11-20 12:54:43,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:54:43,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796489191] [2022-11-20 12:54:43,160 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 12:54:43,160 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:43,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:54:43,161 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:54:43,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2022-11-20 12:54:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:54:43,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:54:43,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:54:43,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 510 treesize of output 494 [2022-11-20 12:54:43,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:54:44,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:54:44,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:44,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:44,627 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:44,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:54:44,685 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:54:44,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:54:44,878 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4090 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_4090) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:54:44,910 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4090 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_4089 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_4089) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_4090) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:54:45,395 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:54:45,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 3155 treesize of output 2888 [2022-11-20 12:54:45,637 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:54:45,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 2840 treesize of output 2645 [2022-11-20 12:54:45,671 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:45,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2566 treesize of output 1702 [2022-11-20 12:54:45,700 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:45,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1702 treesize of output 1270 [2022-11-20 12:54:48,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:54:48,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:54:48,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796489191] [2022-11-20 12:54:48,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796489191] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:54:48,262 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:54:48,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-11-20 12:54:48,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094800777] [2022-11-20 12:54:48,263 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:54:48,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:54:48,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:54:48,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:54:48,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=124, Unknown=2, NotChecked=46, Total=210 [2022-11-20 12:54:48,263 INFO L87 Difference]: Start difference. First operand 1585 states and 4515 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:48,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:54:48,826 INFO L93 Difference]: Finished difference Result 1652 states and 4658 transitions. [2022-11-20 12:54:48,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:54:48,827 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:54:48,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:54:48,829 INFO L225 Difference]: With dead ends: 1652 [2022-11-20 12:54:48,829 INFO L226 Difference]: Without dead ends: 1647 [2022-11-20 12:54:48,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=51, Invalid=165, Unknown=2, NotChecked=54, Total=272 [2022-11-20 12:54:48,830 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:54:48,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 7 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 90 Unchecked, 0.2s Time] [2022-11-20 12:54:48,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2022-11-20 12:54:48,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1591. [2022-11-20 12:54:48,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1584 states have (on average 2.856060606060606) internal successors, (4524), 1590 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:48,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 4524 transitions. [2022-11-20 12:54:48,849 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 4524 transitions. Word has length 26 [2022-11-20 12:54:48,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:54:48,849 INFO L495 AbstractCegarLoop]: Abstraction has 1591 states and 4524 transitions. [2022-11-20 12:54:48,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:48,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 4524 transitions. [2022-11-20 12:54:48,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:54:48,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:54:48,851 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:54:48,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (93)] Forceful destruction successful, exit code 0 [2022-11-20 12:54:49,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:49,051 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:54:49,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:54:49,052 INFO L85 PathProgramCache]: Analyzing trace with hash 791583210, now seen corresponding path program 14 times [2022-11-20 12:54:49,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:54:49,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145973377] [2022-11-20 12:54:49,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:54:49,052 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:49,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:54:49,053 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:54:49,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2022-11-20 12:54:49,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:54:49,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:54:49,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 12:54:49,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:54:49,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 12:54:49,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:54:50,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:54:50,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:50,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:50,559 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:50,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:54:50,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:54:50,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:54:50,814 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4147 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_4147) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:54:50,846 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4147 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_4146 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_4146) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_4147) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:54:51,304 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:54:51,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 851 treesize of output 794 [2022-11-20 12:54:51,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 688 treesize of output 580 [2022-11-20 12:54:51,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 580 treesize of output 364 [2022-11-20 12:54:51,540 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:54:51,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 422 treesize of output 389 [2022-11-20 12:54:53,645 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:54:53,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:54:53,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145973377] [2022-11-20 12:54:53,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145973377] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:54:53,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:54:53,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-20 12:54:53,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939735296] [2022-11-20 12:54:53,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:54:53,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:54:53,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:54:53,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:54:53,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=145, Unknown=2, NotChecked=50, Total=240 [2022-11-20 12:54:53,646 INFO L87 Difference]: Start difference. First operand 1591 states and 4524 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:54,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:54:54,334 INFO L93 Difference]: Finished difference Result 1646 states and 4647 transitions. [2022-11-20 12:54:54,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:54:54,335 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:54:54,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:54:54,337 INFO L225 Difference]: With dead ends: 1646 [2022-11-20 12:54:54,338 INFO L226 Difference]: Without dead ends: 1634 [2022-11-20 12:54:54,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=64, Invalid=214, Unknown=2, NotChecked=62, Total=342 [2022-11-20 12:54:54,338 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 201 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:54:54,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 11 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 201 Unchecked, 0.2s Time] [2022-11-20 12:54:54,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2022-11-20 12:54:54,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1555. [2022-11-20 12:54:54,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1548 states have (on average 2.850129198966408) internal successors, (4412), 1554 states have internal predecessors, (4412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 4412 transitions. [2022-11-20 12:54:54,358 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 4412 transitions. Word has length 26 [2022-11-20 12:54:54,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:54:54,358 INFO L495 AbstractCegarLoop]: Abstraction has 1555 states and 4412 transitions. [2022-11-20 12:54:54,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:54,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 4412 transitions. [2022-11-20 12:54:54,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:54:54,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:54:54,360 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:54:54,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2022-11-20 12:54:54,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:54,560 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:54:54,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:54:54,561 INFO L85 PathProgramCache]: Analyzing trace with hash 801824520, now seen corresponding path program 15 times [2022-11-20 12:54:54,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:54:54,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418250408] [2022-11-20 12:54:54,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:54:54,561 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:54,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:54:54,562 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:54:54,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2022-11-20 12:54:55,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:54:55,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:54:55,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:54:55,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:54:55,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 126 [2022-11-20 12:54:55,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:54:55,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:55,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:55,835 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:55,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:54:55,880 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:54:55,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:54:56,041 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4198 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_4198) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:54:56,080 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4198 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_4197 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_4197) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_4198) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:54:56,270 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:54:56,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 232 treesize of output 210 [2022-11-20 12:54:56,286 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:56,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 97 [2022-11-20 12:54:56,302 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:56,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 70 [2022-11-20 12:54:56,708 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2022-11-20 12:54:56,708 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:54:56,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418250408] [2022-11-20 12:54:56,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418250408] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:54:56,708 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:54:56,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 12:54:56,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604812192] [2022-11-20 12:54:56,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:54:56,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:54:56,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:54:56,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:54:56,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=104, Unknown=2, NotChecked=42, Total=182 [2022-11-20 12:54:56,709 INFO L87 Difference]: Start difference. First operand 1555 states and 4412 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:57,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:54:57,194 INFO L93 Difference]: Finished difference Result 1691 states and 4732 transitions. [2022-11-20 12:54:57,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:54:57,195 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:54:57,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:54:57,197 INFO L225 Difference]: With dead ends: 1691 [2022-11-20 12:54:57,198 INFO L226 Difference]: Without dead ends: 1689 [2022-11-20 12:54:57,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=39, Invalid=123, Unknown=2, NotChecked=46, Total=210 [2022-11-20 12:54:57,198 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:54:57,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 10 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 165 Unchecked, 0.3s Time] [2022-11-20 12:54:57,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2022-11-20 12:54:57,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1571. [2022-11-20 12:54:57,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1564 states have (on average 2.837595907928389) internal successors, (4438), 1570 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:57,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 4438 transitions. [2022-11-20 12:54:57,217 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 4438 transitions. Word has length 26 [2022-11-20 12:54:57,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:54:57,218 INFO L495 AbstractCegarLoop]: Abstraction has 1571 states and 4438 transitions. [2022-11-20 12:54:57,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:57,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 4438 transitions. [2022-11-20 12:54:57,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:54:57,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:54:57,220 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:54:57,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (95)] Ended with exit code 0 [2022-11-20 12:54:57,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:57,420 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:54:57,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:54:57,420 INFO L85 PathProgramCache]: Analyzing trace with hash -127218238, now seen corresponding path program 16 times [2022-11-20 12:54:57,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:54:57,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539161619] [2022-11-20 12:54:57,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:54:57,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:54:57,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:54:57,422 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:54:57,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2022-11-20 12:54:57,942 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:54:57,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:54:57,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 12:54:57,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:54:57,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 12:54:58,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:54:58,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:58,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:54:58,724 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:58,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:54:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:54:58,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:54:58,931 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4252 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_4252) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:54:58,971 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4251 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_4252 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_4251) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_4252) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:54:59,207 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:54:59,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 232 treesize of output 210 [2022-11-20 12:54:59,227 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:59,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 97 [2022-11-20 12:54:59,242 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:54:59,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 70 [2022-11-20 12:54:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2022-11-20 12:54:59,770 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:54:59,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539161619] [2022-11-20 12:54:59,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539161619] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:54:59,771 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:54:59,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 12:54:59,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125770914] [2022-11-20 12:54:59,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:54:59,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:54:59,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:54:59,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:54:59,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=104, Unknown=2, NotChecked=42, Total=182 [2022-11-20 12:54:59,772 INFO L87 Difference]: Start difference. First operand 1571 states and 4438 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:00,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:55:00,318 INFO L93 Difference]: Finished difference Result 1656 states and 4661 transitions. [2022-11-20 12:55:00,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:55:00,319 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:55:00,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:55:00,323 INFO L225 Difference]: With dead ends: 1656 [2022-11-20 12:55:00,323 INFO L226 Difference]: Without dead ends: 1653 [2022-11-20 12:55:00,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=46, Invalid=142, Unknown=2, NotChecked=50, Total=240 [2022-11-20 12:55:00,323 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:55:00,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 127 Unchecked, 0.2s Time] [2022-11-20 12:55:00,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2022-11-20 12:55:00,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1589. [2022-11-20 12:55:00,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1582 states have (on average 2.8356510745891277) internal successors, (4486), 1588 states have internal predecessors, (4486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:00,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 4486 transitions. [2022-11-20 12:55:00,346 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 4486 transitions. Word has length 26 [2022-11-20 12:55:00,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:55:00,346 INFO L495 AbstractCegarLoop]: Abstraction has 1589 states and 4486 transitions. [2022-11-20 12:55:00,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:00,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 4486 transitions. [2022-11-20 12:55:00,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:55:00,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:55:00,349 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:55:00,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (96)] Forceful destruction successful, exit code 0 [2022-11-20 12:55:00,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:55:00,549 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:55:00,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:55:00,549 INFO L85 PathProgramCache]: Analyzing trace with hash -212046910, now seen corresponding path program 17 times [2022-11-20 12:55:00,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:55:00,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218442250] [2022-11-20 12:55:00,550 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:55:00,550 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:55:00,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:55:00,551 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:55:00,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2022-11-20 12:55:01,339 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:55:01,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:55:01,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 12:55:01,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:55:01,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 242 [2022-11-20 12:55:02,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:55:02,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:55:02,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:55:03,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 19 [2022-11-20 12:55:03,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:55:03,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:55:03,351 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4303 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_4303) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:55:03,395 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4303 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_4302 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_4302) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_4303) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:55:03,819 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:55:03,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 428 treesize of output 371 [2022-11-20 12:55:03,855 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:55:03,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 312 treesize of output 204 [2022-11-20 12:55:03,874 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:55:03,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 204 treesize of output 150 [2022-11-20 12:55:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:55:05,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:55:05,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218442250] [2022-11-20 12:55:05,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218442250] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:55:05,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:55:05,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 12:55:05,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090169145] [2022-11-20 12:55:05,506 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:55:05,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:55:05,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:55:05,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:55:05,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=251, Unknown=2, NotChecked=66, Total=380 [2022-11-20 12:55:05,507 INFO L87 Difference]: Start difference. First operand 1589 states and 4486 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:08,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:55:08,185 INFO L93 Difference]: Finished difference Result 1966 states and 5434 transitions. [2022-11-20 12:55:08,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:55:08,187 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:55:08,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:55:08,191 INFO L225 Difference]: With dead ends: 1966 [2022-11-20 12:55:08,191 INFO L226 Difference]: Without dead ends: 1952 [2022-11-20 12:55:08,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=96, Invalid=416, Unknown=2, NotChecked=86, Total=600 [2022-11-20 12:55:08,192 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 9 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:55:08,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 182 Invalid, 0 Unknown, 213 Unchecked, 1.0s Time] [2022-11-20 12:55:08,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2022-11-20 12:55:08,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1683. [2022-11-20 12:55:08,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1676 states have (on average 2.785799522673031) internal successors, (4669), 1682 states have internal predecessors, (4669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:08,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 4669 transitions. [2022-11-20 12:55:08,220 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 4669 transitions. Word has length 26 [2022-11-20 12:55:08,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:55:08,220 INFO L495 AbstractCegarLoop]: Abstraction has 1683 states and 4669 transitions. [2022-11-20 12:55:08,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:08,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 4669 transitions. [2022-11-20 12:55:08,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:55:08,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:55:08,223 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:55:08,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (97)] Ended with exit code 0 [2022-11-20 12:55:08,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:55:08,427 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:55:08,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:55:08,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1365902170, now seen corresponding path program 18 times [2022-11-20 12:55:08,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:55:08,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140534336] [2022-11-20 12:55:08,428 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 12:55:08,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:55:08,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:55:08,429 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:55:08,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2022-11-20 12:55:08,926 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-20 12:55:08,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:55:08,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 12:55:08,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:55:08,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 12:55:09,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:55:09,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:55:09,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:55:09,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:55:09,771 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:55:09,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:55:09,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:55:09,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:55:09,983 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4359 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_4359) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:55:10,025 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4358 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_4359 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_4358) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_4359) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:55:10,551 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:55:10,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 851 treesize of output 794 [2022-11-20 12:55:10,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 688 treesize of output 580 [2022-11-20 12:55:10,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 580 treesize of output 364 [2022-11-20 12:55:10,816 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:55:10,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 422 treesize of output 389 [2022-11-20 12:55:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2022-11-20 12:55:12,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:55:12,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140534336] [2022-11-20 12:55:12,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140534336] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:55:12,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:55:12,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-20 12:55:12,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214267921] [2022-11-20 12:55:12,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:55:12,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:55:12,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:55:12,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:55:12,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=145, Unknown=2, NotChecked=50, Total=240 [2022-11-20 12:55:12,979 INFO L87 Difference]: Start difference. First operand 1683 states and 4669 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:13,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:55:13,664 INFO L93 Difference]: Finished difference Result 1775 states and 4858 transitions. [2022-11-20 12:55:13,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:55:13,665 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:55:13,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:55:13,668 INFO L225 Difference]: With dead ends: 1775 [2022-11-20 12:55:13,668 INFO L226 Difference]: Without dead ends: 1753 [2022-11-20 12:55:13,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=58, Invalid=188, Unknown=2, NotChecked=58, Total=306 [2022-11-20 12:55:13,669 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 15 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 292 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:55:13,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 12 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 292 Unchecked, 0.3s Time] [2022-11-20 12:55:13,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2022-11-20 12:55:13,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1677. [2022-11-20 12:55:13,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1677 states, 1670 states have (on average 2.788622754491018) internal successors, (4657), 1676 states have internal predecessors, (4657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:13,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 4657 transitions. [2022-11-20 12:55:13,697 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 4657 transitions. Word has length 26 [2022-11-20 12:55:13,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:55:13,698 INFO L495 AbstractCegarLoop]: Abstraction has 1677 states and 4657 transitions. [2022-11-20 12:55:13,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:13,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 4657 transitions. [2022-11-20 12:55:13,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:55:13,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:55:13,700 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:55:13,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (98)] Forceful destruction successful, exit code 0 [2022-11-20 12:55:13,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:55:13,901 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:55:13,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:55:13,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1876862492, now seen corresponding path program 19 times [2022-11-20 12:55:13,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:55:13,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063782801] [2022-11-20 12:55:13,901 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 12:55:13,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:55:13,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:55:13,902 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:55:13,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2022-11-20 12:55:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:55:14,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:55:14,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:55:14,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 116 [2022-11-20 12:55:14,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:55:14,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:55:14,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:55:15,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:55:15,388 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:55:15,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:55:15,434 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:55:15,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:55:15,610 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4411 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (_ bv0 32) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_4411) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset))))))) is different from false [2022-11-20 12:55:15,641 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4411 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_4410 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_4410) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_4411) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:55:16,108 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:55:16,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 851 treesize of output 794 [2022-11-20 12:55:16,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 688 treesize of output 472 [2022-11-20 12:55:16,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 472 treesize of output 364 [2022-11-20 12:55:16,331 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:55:16,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 422 treesize of output 389 [2022-11-20 12:55:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2022-11-20 12:55:18,059 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:55:18,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063782801] [2022-11-20 12:55:18,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063782801] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:55:18,059 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:55:18,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-11-20 12:55:18,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050120780] [2022-11-20 12:55:18,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:55:18,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:55:18,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:55:18,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:55:18,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=124, Unknown=2, NotChecked=46, Total=210 [2022-11-20 12:55:18,060 INFO L87 Difference]: Start difference. First operand 1677 states and 4657 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:18,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:55:18,655 INFO L93 Difference]: Finished difference Result 1764 states and 4877 transitions. [2022-11-20 12:55:18,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:55:18,656 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:55:18,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:55:18,659 INFO L225 Difference]: With dead ends: 1764 [2022-11-20 12:55:18,659 INFO L226 Difference]: Without dead ends: 1758 [2022-11-20 12:55:18,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=59, Invalid=187, Unknown=2, NotChecked=58, Total=306 [2022-11-20 12:55:18,659 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:55:18,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 150 Unchecked, 0.2s Time] [2022-11-20 12:55:18,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2022-11-20 12:55:18,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1665. [2022-11-20 12:55:18,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1658 states have (on average 2.7949336550060315) internal successors, (4634), 1664 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:18,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 4634 transitions. [2022-11-20 12:55:18,680 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 4634 transitions. Word has length 26 [2022-11-20 12:55:18,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:55:18,681 INFO L495 AbstractCegarLoop]: Abstraction has 1665 states and 4634 transitions. [2022-11-20 12:55:18,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:18,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 4634 transitions. [2022-11-20 12:55:18,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:55:18,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:55:18,683 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:55:18,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (99)] Forceful destruction successful, exit code 0 [2022-11-20 12:55:18,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:55:18,883 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:55:18,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:55:18,884 INFO L85 PathProgramCache]: Analyzing trace with hash 862991062, now seen corresponding path program 20 times [2022-11-20 12:55:18,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:55:18,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661292021] [2022-11-20 12:55:18,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:55:18,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:55:18,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:55:18,886 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:55:18,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2022-11-20 12:55:19,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:55:19,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:55:19,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 12:55:19,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:55:19,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 12:55:19,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:55:19,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:55:19,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:55:20,105 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:55:20,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:55:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:55:20,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:55:20,319 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4465 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_4465) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:55:20,350 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4464 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_4465 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_4464) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_4465) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:55:20,566 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:55:20,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 428 treesize of output 371 [2022-11-20 12:55:20,584 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:55:20,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 312 treesize of output 258 [2022-11-20 12:55:20,599 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:55:20,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 258 treesize of output 150 [2022-11-20 12:55:21,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2022-11-20 12:55:21,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:55:21,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661292021] [2022-11-20 12:55:21,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661292021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:55:21,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:55:21,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 12:55:21,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272504765] [2022-11-20 12:55:21,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:55:21,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:55:21,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:55:21,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:55:21,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=104, Unknown=2, NotChecked=42, Total=182 [2022-11-20 12:55:21,012 INFO L87 Difference]: Start difference. First operand 1665 states and 4634 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:21,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:55:21,428 INFO L93 Difference]: Finished difference Result 1749 states and 4848 transitions. [2022-11-20 12:55:21,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:55:21,429 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:55:21,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:55:21,432 INFO L225 Difference]: With dead ends: 1749 [2022-11-20 12:55:21,432 INFO L226 Difference]: Without dead ends: 1741 [2022-11-20 12:55:21,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=49, Invalid=139, Unknown=2, NotChecked=50, Total=240 [2022-11-20 12:55:21,432 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:55:21,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 147 Unchecked, 0.1s Time] [2022-11-20 12:55:21,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2022-11-20 12:55:21,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1674. [2022-11-20 12:55:21,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1667 states have (on average 2.79124175164967) internal successors, (4653), 1673 states have internal predecessors, (4653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:21,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 4653 transitions. [2022-11-20 12:55:21,471 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 4653 transitions. Word has length 26 [2022-11-20 12:55:21,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:55:21,471 INFO L495 AbstractCegarLoop]: Abstraction has 1674 states and 4653 transitions. [2022-11-20 12:55:21,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:21,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 4653 transitions. [2022-11-20 12:55:21,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:55:21,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:55:21,475 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:55:21,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (100)] Ended with exit code 0 [2022-11-20 12:55:21,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:55:21,678 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:55:21,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:55:21,679 INFO L85 PathProgramCache]: Analyzing trace with hash -420049300, now seen corresponding path program 21 times [2022-11-20 12:55:21,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:55:21,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796671858] [2022-11-20 12:55:21,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:55:21,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:55:21,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:55:21,680 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:55:21,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2022-11-20 12:55:22,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:55:22,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:55:22,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 12:55:22,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:55:22,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 12:55:22,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:55:22,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:55:22,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:55:22,874 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:55:22,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:55:22,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:55:22,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:55:23,092 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4519 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_4519) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:55:23,122 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4518 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_4519 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_4518) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_4519) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_front~0))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1 c_~q1~0.offset)) (select .cse0 (bvadd (_ bv2 32) .cse1 c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset)))) (_ bv0 32)))) is different from false [2022-11-20 12:55:23,318 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:55:23,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 232 treesize of output 210 [2022-11-20 12:55:23,334 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:55:23,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 97 [2022-11-20 12:55:23,348 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:55:23,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 70 [2022-11-20 12:55:23,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2022-11-20 12:55:23,797 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:55:23,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796671858] [2022-11-20 12:55:23,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796671858] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:55:23,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:55:23,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 12:55:23,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145496995] [2022-11-20 12:55:23,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:55:23,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:55:23,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:55:23,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:55:23,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=104, Unknown=2, NotChecked=42, Total=182 [2022-11-20 12:55:23,798 INFO L87 Difference]: Start difference. First operand 1674 states and 4653 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:24,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:55:24,398 INFO L93 Difference]: Finished difference Result 1728 states and 4798 transitions. [2022-11-20 12:55:24,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:55:24,399 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:55:24,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:55:24,402 INFO L225 Difference]: With dead ends: 1728 [2022-11-20 12:55:24,402 INFO L226 Difference]: Without dead ends: 1716 [2022-11-20 12:55:24,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=46, Invalid=142, Unknown=2, NotChecked=50, Total=240 [2022-11-20 12:55:24,402 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:55:24,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 111 Unchecked, 0.3s Time] [2022-11-20 12:55:24,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2022-11-20 12:55:24,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1637. [2022-11-20 12:55:24,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1637 states, 1630 states have (on average 2.806134969325153) internal successors, (4574), 1636 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:24,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 4574 transitions. [2022-11-20 12:55:24,423 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 4574 transitions. Word has length 26 [2022-11-20 12:55:24,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:55:24,423 INFO L495 AbstractCegarLoop]: Abstraction has 1637 states and 4574 transitions. [2022-11-20 12:55:24,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:24,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 4574 transitions. [2022-11-20 12:55:24,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:55:24,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:55:24,425 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:55:24,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (101)] Forceful destruction successful, exit code 0 [2022-11-20 12:55:24,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:55:24,625 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:55:24,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:55:24,626 INFO L85 PathProgramCache]: Analyzing trace with hash -2035566806, now seen corresponding path program 22 times [2022-11-20 12:55:24,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:55:24,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324801943] [2022-11-20 12:55:24,626 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:55:24,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:55:24,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:55:24,627 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:55:24,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2022-11-20 12:55:25,131 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:55:25,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:55:25,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:55:25,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:55:25,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 12:55:25,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:55:25,402 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:55:25,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:55:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:55:25,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:55:25,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:55:25,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1324801943] [2022-11-20 12:55:25,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1324801943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:55:25,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:55:25,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:55:25,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965921730] [2022-11-20 12:55:25,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:55:25,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:55:25,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:55:25,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:55:25,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:55:25,437 INFO L87 Difference]: Start difference. First operand 1637 states and 4574 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:27,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:55:28,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:55:28,244 INFO L93 Difference]: Finished difference Result 1805 states and 5030 transitions. [2022-11-20 12:55:28,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:55:28,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:55:28,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:55:28,249 INFO L225 Difference]: With dead ends: 1805 [2022-11-20 12:55:28,249 INFO L226 Difference]: Without dead ends: 1802 [2022-11-20 12:55:28,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:55:28,249 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 20 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:55:28,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 5 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 1 Unknown, 53 Unchecked, 2.8s Time] [2022-11-20 12:55:28,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2022-11-20 12:55:28,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1713. [2022-11-20 12:55:28,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1713 states, 1706 states have (on average 2.8388042203985933) internal successors, (4843), 1712 states have internal predecessors, (4843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:28,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 4843 transitions. [2022-11-20 12:55:28,270 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 4843 transitions. Word has length 26 [2022-11-20 12:55:28,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:55:28,270 INFO L495 AbstractCegarLoop]: Abstraction has 1713 states and 4843 transitions. [2022-11-20 12:55:28,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:28,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 4843 transitions. [2022-11-20 12:55:28,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:55:28,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:55:28,272 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:55:28,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (102)] Ended with exit code 0 [2022-11-20 12:55:28,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:55:28,487 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-20 12:55:28,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:55:28,487 INFO L85 PathProgramCache]: Analyzing trace with hash -222230220, now seen corresponding path program 23 times [2022-11-20 12:55:28,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:55:28,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173520867] [2022-11-20 12:55:28,488 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:55:28,488 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:55:28,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:55:28,493 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:55:28,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a6e9a6-6360-4cd2-a903-ce59aeed3c45/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2022-11-20 12:55:29,082 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:55:29,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:55:29,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 12:55:29,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:55:29,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2022-11-20 12:55:29,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2022-11-20 12:55:29,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:55:29,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:55:29,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:55:29,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:55:29,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:55:29,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:55:29,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:55:29,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:55:29,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:55:29,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:55:29,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:55:29,932 INFO L190 IndexEqualityManager]: detected not equals via solver