./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 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_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a --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 b6872adb14a2dfa535a444bb6d903bd37f60f26cf718935f2927b47d5c5a6aaa --- 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-b5237d8 [2022-11-21 09:02:26,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:02:26,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:02:27,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:02:27,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:02:27,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:02:27,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:02:27,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:02:27,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:02:27,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:02:27,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:02:27,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:02:27,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:02:27,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:02:27,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:02:27,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:02:27,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:02:27,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:02:27,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:02:27,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:02:27,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:02:27,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:02:27,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:02:27,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:02:27,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:02:27,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:02:27,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:02:27,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:02:27,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:02:27,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:02:27,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:02:27,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:02:27,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:02:27,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:02:27,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:02:27,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:02:27,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:02:27,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:02:27,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:02:27,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:02:27,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:02:27,089 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-21 09:02:27,117 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:02:27,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:02:27,118 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:02:27,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:02:27,120 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:02:27,120 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:02:27,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:02:27,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:02:27,122 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:02:27,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:02:27,122 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 09:02:27,123 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 09:02:27,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:02:27,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 09:02:27,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:02:27,124 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 09:02:27,125 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 09:02:27,125 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 09:02:27,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:02:27,126 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 09:02:27,126 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 09:02:27,126 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:02:27,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:02:27,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:02:27,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:02:27,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:02:27,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:02:27,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:02:27,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:02:27,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:02:27,129 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_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6872adb14a2dfa535a444bb6d903bd37f60f26cf718935f2927b47d5c5a6aaa [2022-11-21 09:02:27,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:02:27,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:02:27,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:02:27,495 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:02:27,496 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:02:27,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2022-11-21 09:02:31,272 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:02:31,588 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:02:31,589 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2022-11-21 09:02:31,598 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/data/3542b68e6/162b6021ebab445a8ba0724a79d5ac2e/FLAG9f3a2ae4a [2022-11-21 09:02:31,619 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/data/3542b68e6/162b6021ebab445a8ba0724a79d5ac2e [2022-11-21 09:02:31,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:02:31,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:02:31,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:02:31,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:02:31,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:02:31,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:31" (1/1) ... [2022-11-21 09:02:31,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40532a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:31, skipping insertion in model container [2022-11-21 09:02:31,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:31" (1/1) ... [2022-11-21 09:02:31,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:02:31,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:02:31,907 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_e1e38584-b315-4a0e-82a9-790497fbf093/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c[3042,3055] [2022-11-21 09:02:31,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:02:31,935 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) [2022-11-21 09:02:31,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@60aaa245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:31, skipping insertion in model container [2022-11-21 09:02:31,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:02:31,937 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-21 09:02:31,939 INFO L158 Benchmark]: Toolchain (without parser) took 313.83ms. Allocated memory is still 203.4MB. Free memory was 170.5MB in the beginning and 160.2MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 09:02:31,940 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 151.0MB. Free memory is still 94.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 09:02:31,941 INFO L158 Benchmark]: CACSL2BoogieTranslator took 310.37ms. Allocated memory is still 203.4MB. Free memory was 170.1MB in the beginning and 160.2MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 09:02:31,942 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 151.0MB. Free memory is still 94.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 310.37ms. Allocated memory is still 203.4MB. Free memory was 170.1MB in the beginning and 160.2MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 119]: 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_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a --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 b6872adb14a2dfa535a444bb6d903bd37f60f26cf718935f2927b47d5c5a6aaa --- 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-b5237d8 [2022-11-21 09:02:34,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:02:34,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:02:34,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:02:34,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:02:34,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:02:34,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:02:34,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:02:34,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:02:34,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:02:34,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:02:34,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:02:34,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:02:34,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:02:34,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:02:34,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:02:34,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:02:34,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:02:34,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:02:34,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:02:34,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:02:34,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:02:34,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:02:34,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:02:34,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:02:34,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:02:34,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:02:34,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:02:34,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:02:34,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:02:34,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:02:34,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:02:34,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:02:34,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:02:34,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:02:34,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:02:34,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:02:34,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:02:34,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:02:34,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:02:34,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:02:34,897 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-21 09:02:34,942 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:02:34,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:02:34,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:02:34,944 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:02:34,945 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:02:34,946 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:02:34,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:02:34,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:02:34,947 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:02:34,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:02:34,948 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 09:02:34,949 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 09:02:34,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:02:34,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 09:02:34,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:02:34,950 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 09:02:34,950 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 09:02:34,950 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 09:02:34,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:02:34,951 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 09:02:34,951 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-21 09:02:34,951 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-21 09:02:34,951 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 09:02:34,952 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:02:34,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:02:34,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:02:34,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:02:34,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:02:34,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:02:34,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:02:34,954 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-21 09:02:34,954 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-21 09:02:34,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-21 09:02:34,955 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_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6872adb14a2dfa535a444bb6d903bd37f60f26cf718935f2927b47d5c5a6aaa [2022-11-21 09:02:35,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:02:35,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:02:35,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:02:35,397 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:02:35,398 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:02:35,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2022-11-21 09:02:38,974 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:02:39,291 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:02:39,291 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2022-11-21 09:02:39,305 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/data/6ae567a10/9c522616179940208fbf016d3ebc29e7/FLAG788961faf [2022-11-21 09:02:39,334 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/data/6ae567a10/9c522616179940208fbf016d3ebc29e7 [2022-11-21 09:02:39,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:02:39,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:02:39,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:02:39,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:02:39,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:02:39,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:39" (1/1) ... [2022-11-21 09:02:39,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4337a81c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:39, skipping insertion in model container [2022-11-21 09:02:39,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:39" (1/1) ... [2022-11-21 09:02:39,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:02:39,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:02:39,687 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_e1e38584-b315-4a0e-82a9-790497fbf093/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c[3042,3055] [2022-11-21 09:02:39,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:02:39,747 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-21 09:02:39,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:02:39,797 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_e1e38584-b315-4a0e-82a9-790497fbf093/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c[3042,3055] [2022-11-21 09:02:39,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:02:39,826 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:02:39,855 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_e1e38584-b315-4a0e-82a9-790497fbf093/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c[3042,3055] [2022-11-21 09:02:39,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:02:39,892 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:02:39,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:39 WrapperNode [2022-11-21 09:02:39,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:02:39,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:02:39,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:02:39,895 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:02:39,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:39" (1/1) ... [2022-11-21 09:02:39,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:39" (1/1) ... [2022-11-21 09:02:39,949 INFO L138 Inliner]: procedures = 28, calls = 50, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 176 [2022-11-21 09:02:39,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:02:39,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:02:39,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:02:39,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:02:39,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:39" (1/1) ... [2022-11-21 09:02:39,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:39" (1/1) ... [2022-11-21 09:02:39,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:39" (1/1) ... [2022-11-21 09:02:39,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:39" (1/1) ... [2022-11-21 09:02:39,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:39" (1/1) ... [2022-11-21 09:02:40,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:39" (1/1) ... [2022-11-21 09:02:40,010 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:39" (1/1) ... [2022-11-21 09:02:40,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:39" (1/1) ... [2022-11-21 09:02:40,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:02:40,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:02:40,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:02:40,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:02:40,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:39" (1/1) ... [2022-11-21 09:02:40,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:02:40,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:40,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:40,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:02:40,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 09:02:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-21 09:02:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 09:02:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-21 09:02:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 09:02:40,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 09:02:40,159 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 09:02:40,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 09:02:40,159 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 09:02:40,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 09:02:40,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 09:02:40,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 09:02:40,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 09:02:40,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:02:40,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:02:40,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 09:02:40,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-21 09:02:40,163 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 09:02:40,431 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:02:40,433 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:02:41,136 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:02:41,452 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:02:41,452 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 09:02:41,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:02:41 BoogieIcfgContainer [2022-11-21 09:02:41,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:02:41,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:02:41,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:02:41,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:02:41,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:02:39" (1/3) ... [2022-11-21 09:02:41,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf33692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:02:41, skipping insertion in model container [2022-11-21 09:02:41,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:39" (2/3) ... [2022-11-21 09:02:41,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf33692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:02:41, skipping insertion in model container [2022-11-21 09:02:41,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:02:41" (3/3) ... [2022-11-21 09:02:41,467 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-multiply-verify.wvr.c [2022-11-21 09:02:41,491 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:02:41,492 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-11-21 09:02:41,492 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 09:02:41,657 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 09:02:41,701 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-21 09:02:41,720 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 177 transitions, 378 flow [2022-11-21 09:02:41,724 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 177 transitions, 378 flow [2022-11-21 09:02:41,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 177 transitions, 378 flow [2022-11-21 09:02:41,845 INFO L130 PetriNetUnfolder]: 9/174 cut-off events. [2022-11-21 09:02:41,845 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 09:02:41,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 174 events. 9/174 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 187 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 125. Up to 2 conditions per place. [2022-11-21 09:02:41,856 INFO L119 LiptonReduction]: Number of co-enabled transitions 2516 [2022-11-21 09:03:19,394 INFO L134 LiptonReduction]: Checked pairs total: 3214 [2022-11-21 09:03:19,395 INFO L136 LiptonReduction]: Total number of compositions: 176 [2022-11-21 09:03:19,408 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 49 transitions, 122 flow [2022-11-21 09:03:19,532 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 874 states, 670 states have (on average 4.3059701492537314) internal successors, (2885), 873 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:19,563 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:03:19,574 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;@582da159, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:03:19,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-11-21 09:03:19,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 670 states have (on average 4.3059701492537314) internal successors, (2885), 873 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:19,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 09:03:19,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:19,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 09:03:19,586 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 09:03:19,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:19,591 INFO L85 PathProgramCache]: Analyzing trace with hash 24913, now seen corresponding path program 1 times [2022-11-21 09:03:19,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:03:19,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521855920] [2022-11-21 09:03:19,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:19,607 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 [2022-11-21 09:03:19,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:03:19,614 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:03:19,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:19,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 09:03:19,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:20,148 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:03:20,149 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 [2022-11-21 09:03:20,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:20,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:03:20,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:03:20,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521855920] [2022-11-21 09:03:20,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521855920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:20,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:20,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 09:03:20,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994447108] [2022-11-21 09:03:20,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:20,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:03:20,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:03:20,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:03:20,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:03:20,276 INFO L87 Difference]: Start difference. First operand has 874 states, 670 states have (on average 4.3059701492537314) internal successors, (2885), 873 states have internal predecessors, (2885), 0 states have call successors, (0), 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) [2022-11-21 09:03:20,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:20,970 INFO L93 Difference]: Finished difference Result 1496 states and 4880 transitions. [2022-11-21 09:03:20,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:03:20,973 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 [2022-11-21 09:03:20,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:21,025 INFO L225 Difference]: With dead ends: 1496 [2022-11-21 09:03:21,025 INFO L226 Difference]: Without dead ends: 1496 [2022-11-21 09:03:21,026 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 [2022-11-21 09:03:21,030 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:21,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 09:03:21,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2022-11-21 09:03:21,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 750. [2022-11-21 09:03:21,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 582 states have (on average 4.202749140893471) internal successors, (2446), 749 states have internal predecessors, (2446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2446 transitions. [2022-11-21 09:03:21,175 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2446 transitions. Word has length 2 [2022-11-21 09:03:21,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:21,178 INFO L495 AbstractCegarLoop]: Abstraction has 750 states and 2446 transitions. [2022-11-21 09:03:21,179 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) [2022-11-21 09:03:21,179 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2446 transitions. [2022-11-21 09:03:21,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 09:03:21,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:21,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 09:03:21,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:21,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:03:21,408 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 09:03:21,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:21,409 INFO L85 PathProgramCache]: Analyzing trace with hash 25009, now seen corresponding path program 1 times [2022-11-21 09:03:21,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:03:21,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163441390] [2022-11-21 09:03:21,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:21,410 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 [2022-11-21 09:03:21,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:03:21,412 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:03:21,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:21,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 09:03:21,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:21,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:03:21,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:03:21,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:03:21,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:03:21,656 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-21 09:03:21,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 29 [2022-11-21 09:03:21,693 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-21 09:03:21,693 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 23 treesize of output 19 [2022-11-21 09:03:21,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:21,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:03:21,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:03:21,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163441390] [2022-11-21 09:03:21,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163441390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:21,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:21,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 09:03:21,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180852988] [2022-11-21 09:03:21,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:21,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:03:21,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:03:21,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:03:21,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:03:21,763 INFO L87 Difference]: Start difference. First operand 750 states and 2446 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) [2022-11-21 09:03:22,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:22,113 INFO L93 Difference]: Finished difference Result 624 states and 1969 transitions. [2022-11-21 09:03:22,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:03:22,114 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 [2022-11-21 09:03:22,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:22,163 INFO L225 Difference]: With dead ends: 624 [2022-11-21 09:03:22,163 INFO L226 Difference]: Without dead ends: 624 [2022-11-21 09:03:22,163 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 [2022-11-21 09:03:22,165 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:22,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 09:03:22,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-11-21 09:03:22,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 624. [2022-11-21 09:03:22,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 493 states have (on average 3.993914807302231) internal successors, (1969), 623 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:22,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 1969 transitions. [2022-11-21 09:03:22,195 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 1969 transitions. Word has length 2 [2022-11-21 09:03:22,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:22,195 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 1969 transitions. [2022-11-21 09:03:22,195 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) [2022-11-21 09:03:22,196 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 1969 transitions. [2022-11-21 09:03:22,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 09:03:22,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:22,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 09:03:22,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:22,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:03:22,412 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 09:03:22,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:22,412 INFO L85 PathProgramCache]: Analyzing trace with hash 24912, now seen corresponding path program 1 times [2022-11-21 09:03:22,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:03:22,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597158765] [2022-11-21 09:03:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:22,416 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 [2022-11-21 09:03:22,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:03:22,418 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:03:22,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:22,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 09:03:22,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:22,679 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-21 09:03:22,679 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 [2022-11-21 09:03:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:22,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:03:22,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:03:22,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597158765] [2022-11-21 09:03:22,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597158765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:22,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:22,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 09:03:22,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323864338] [2022-11-21 09:03:22,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:22,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:03:22,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:03:22,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:03:22,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:03:22,714 INFO L87 Difference]: Start difference. First operand 624 states and 1969 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) [2022-11-21 09:03:23,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:23,001 INFO L93 Difference]: Finished difference Result 623 states and 1967 transitions. [2022-11-21 09:03:23,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:03:23,002 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 [2022-11-21 09:03:23,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:23,006 INFO L225 Difference]: With dead ends: 623 [2022-11-21 09:03:23,006 INFO L226 Difference]: Without dead ends: 623 [2022-11-21 09:03:23,007 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 [2022-11-21 09:03:23,008 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:23,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 09:03:23,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2022-11-21 09:03:23,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2022-11-21 09:03:23,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 493 states have (on average 3.9898580121703855) internal successors, (1967), 622 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:23,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1967 transitions. [2022-11-21 09:03:23,034 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1967 transitions. Word has length 2 [2022-11-21 09:03:23,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:23,035 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 1967 transitions. [2022-11-21 09:03:23,035 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) [2022-11-21 09:03:23,035 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1967 transitions. [2022-11-21 09:03:23,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 09:03:23,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:23,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 09:03:23,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-21 09:03:23,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:03:23,260 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 09:03:23,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:23,260 INFO L85 PathProgramCache]: Analyzing trace with hash 25008, now seen corresponding path program 1 times [2022-11-21 09:03:23,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:03:23,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760675165] [2022-11-21 09:03:23,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:23,261 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 [2022-11-21 09:03:23,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:03:23,263 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:03:23,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:23,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 09:03:23,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:23,515 INFO L321 Elim1Store]: treesize reduction 115, result has 16.1 percent of original size [2022-11-21 09:03:23,516 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 6 case distinctions, treesize of input 38 treesize of output 47 [2022-11-21 09:03:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:23,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:03:23,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:03:23,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760675165] [2022-11-21 09:03:23,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760675165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:23,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:23,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 09:03:23,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240645906] [2022-11-21 09:03:23,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:23,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:03:23,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:03:23,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:03:23,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:03:23,587 INFO L87 Difference]: Start difference. First operand 623 states and 1967 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) [2022-11-21 09:03:23,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:23,950 INFO L93 Difference]: Finished difference Result 497 states and 1490 transitions. [2022-11-21 09:03:23,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:03:23,952 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 [2022-11-21 09:03:23,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:23,956 INFO L225 Difference]: With dead ends: 497 [2022-11-21 09:03:23,956 INFO L226 Difference]: Without dead ends: 497 [2022-11-21 09:03:23,957 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 [2022-11-21 09:03:23,958 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:23,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 09:03:23,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-11-21 09:03:23,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2022-11-21 09:03:23,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 404 states have (on average 3.6881188118811883) internal successors, (1490), 496 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:23,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 1490 transitions. [2022-11-21 09:03:23,981 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 1490 transitions. Word has length 2 [2022-11-21 09:03:23,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:23,982 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 1490 transitions. [2022-11-21 09:03:23,982 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) [2022-11-21 09:03:23,982 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 1490 transitions. [2022-11-21 09:03:23,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 09:03:23,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:23,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 09:03:24,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:24,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:03:24,204 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 09:03:24,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:24,204 INFO L85 PathProgramCache]: Analyzing trace with hash 775392, now seen corresponding path program 1 times [2022-11-21 09:03:24,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:03:24,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892659593] [2022-11-21 09:03:24,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:24,205 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 [2022-11-21 09:03:24,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:03:24,206 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:03:24,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:24,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 09:03:24,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:24,509 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:03:24,509 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 [2022-11-21 09:03:24,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:24,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:03:24,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:24,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:03:24,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892659593] [2022-11-21 09:03:24,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892659593] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:03:24,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:03:24,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-21 09:03:24,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183338602] [2022-11-21 09:03:24,958 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:03:24,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:03:24,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:03:24,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:03:24,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:03:24,960 INFO L87 Difference]: Start difference. First operand 497 states and 1490 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) [2022-11-21 09:03:25,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:25,849 INFO L93 Difference]: Finished difference Result 1486 states and 4464 transitions. [2022-11-21 09:03:25,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:03:25,850 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 [2022-11-21 09:03:25,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:25,863 INFO L225 Difference]: With dead ends: 1486 [2022-11-21 09:03:25,863 INFO L226 Difference]: Without dead ends: 1486 [2022-11-21 09:03:25,864 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 [2022-11-21 09:03:25,875 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 211 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:25,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 0 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 09:03:25,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2022-11-21 09:03:25,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 500. [2022-11-21 09:03:25,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 407 states have (on average 3.675675675675676) internal successors, (1496), 499 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:25,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1496 transitions. [2022-11-21 09:03:25,923 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1496 transitions. Word has length 3 [2022-11-21 09:03:25,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:25,924 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 1496 transitions. [2022-11-21 09:03:25,924 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) [2022-11-21 09:03:25,925 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1496 transitions. [2022-11-21 09:03:25,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-21 09:03:25,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:25,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-21 09:03:25,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:26,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:03:26,139 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 09:03:26,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:26,139 INFO L85 PathProgramCache]: Analyzing trace with hash 24050142, now seen corresponding path program 1 times [2022-11-21 09:03:26,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:03:26,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656895291] [2022-11-21 09:03:26,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:26,140 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 [2022-11-21 09:03:26,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:03:26,142 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:03:26,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:26,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 09:03:26,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:26,354 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-21 09:03:26,354 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 40 [2022-11-21 09:03:26,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:26,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:03:26,517 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:03:26,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656895291] [2022-11-21 09:03:26,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656895291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:26,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:26,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 09:03:26,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560605195] [2022-11-21 09:03:26,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:26,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:03:26,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:03:26,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:03:26,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:03:26,523 INFO L87 Difference]: Start difference. First operand 500 states and 1496 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) [2022-11-21 09:03:26,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:26,782 INFO L93 Difference]: Finished difference Result 470 states and 1416 transitions. [2022-11-21 09:03:26,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:03:26,783 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 [2022-11-21 09:03:26,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:26,787 INFO L225 Difference]: With dead ends: 470 [2022-11-21 09:03:26,787 INFO L226 Difference]: Without dead ends: 470 [2022-11-21 09:03:26,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:03:26,790 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:26,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 09:03:26,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-11-21 09:03:26,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2022-11-21 09:03:26,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 392 states have (on average 3.6122448979591835) internal successors, (1416), 469 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:26,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1416 transitions. [2022-11-21 09:03:26,814 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1416 transitions. Word has length 4 [2022-11-21 09:03:26,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:26,815 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 1416 transitions. [2022-11-21 09:03:26,815 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) [2022-11-21 09:03:26,815 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1416 transitions. [2022-11-21 09:03:26,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-21 09:03:26,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:26,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-21 09:03:26,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-21 09:03:27,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:03:27,035 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 09:03:27,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:27,036 INFO L85 PathProgramCache]: Analyzing trace with hash 24050143, now seen corresponding path program 1 times [2022-11-21 09:03:27,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:03:27,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322590819] [2022-11-21 09:03:27,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:27,037 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 [2022-11-21 09:03:27,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:03:27,038 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:03:27,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:27,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 09:03:27,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:27,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:03:27,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:03:27,298 INFO L321 Elim1Store]: treesize reduction 49, result has 33.8 percent of original size [2022-11-21 09:03:27,299 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 [2022-11-21 09:03:27,332 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 [2022-11-21 09:03:27,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:27,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:03:27,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:03:27,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322590819] [2022-11-21 09:03:27,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322590819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:27,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:27,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 09:03:27,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875676443] [2022-11-21 09:03:27,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:27,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:03:27,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:03:27,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:03:27,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:03:27,446 INFO L87 Difference]: Start difference. First operand 470 states and 1416 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) [2022-11-21 09:03:27,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:27,708 INFO L93 Difference]: Finished difference Result 440 states and 1336 transitions. [2022-11-21 09:03:27,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:03:27,709 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 [2022-11-21 09:03:27,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:27,712 INFO L225 Difference]: With dead ends: 440 [2022-11-21 09:03:27,712 INFO L226 Difference]: Without dead ends: 440 [2022-11-21 09:03:27,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:03:27,714 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:27,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 09:03:27,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-21 09:03:27,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2022-11-21 09:03:27,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 377 states have (on average 3.543766578249337) internal successors, (1336), 439 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:27,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1336 transitions. [2022-11-21 09:03:27,731 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1336 transitions. Word has length 4 [2022-11-21 09:03:27,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:27,732 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 1336 transitions. [2022-11-21 09:03:27,732 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) [2022-11-21 09:03:27,732 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1336 transitions. [2022-11-21 09:03:27,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 09:03:27,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:27,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 09:03:27,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:27,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:03:27,947 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 09:03:27,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:27,948 INFO L85 PathProgramCache]: Analyzing trace with hash 745552994, now seen corresponding path program 1 times [2022-11-21 09:03:27,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:03:27,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675659466] [2022-11-21 09:03:27,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:27,949 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 [2022-11-21 09:03:27,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:03:27,951 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:03:27,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:28,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 09:03:28,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:28,167 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-21 09:03:28,167 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 [2022-11-21 09:03:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:28,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:03:28,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:03:28,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675659466] [2022-11-21 09:03:28,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675659466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:28,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:28,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:03:28,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897346890] [2022-11-21 09:03:28,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:28,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:03:28,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:03:28,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:03:28,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:03:28,213 INFO L87 Difference]: Start difference. First operand 440 states and 1336 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) [2022-11-21 09:03:28,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:28,490 INFO L93 Difference]: Finished difference Result 258 states and 755 transitions. [2022-11-21 09:03:28,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:03:28,491 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 [2022-11-21 09:03:28,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:28,493 INFO L225 Difference]: With dead ends: 258 [2022-11-21 09:03:28,494 INFO L226 Difference]: Without dead ends: 258 [2022-11-21 09:03:28,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:03:28,495 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:28,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 09:03:28,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-21 09:03:28,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2022-11-21 09:03:28,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 231 states have (on average 3.2683982683982684) internal successors, (755), 257 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:28,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 755 transitions. [2022-11-21 09:03:28,510 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 755 transitions. Word has length 5 [2022-11-21 09:03:28,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:28,510 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 755 transitions. [2022-11-21 09:03:28,511 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) [2022-11-21 09:03:28,511 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 755 transitions. [2022-11-21 09:03:28,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 09:03:28,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:28,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 09:03:28,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:28,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:03:28,712 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 09:03:28,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:28,713 INFO L85 PathProgramCache]: Analyzing trace with hash 745552995, now seen corresponding path program 1 times [2022-11-21 09:03:28,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:03:28,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241116953] [2022-11-21 09:03:28,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:28,719 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 [2022-11-21 09:03:28,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:03:28,720 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:03:28,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:28,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 09:03:28,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:28,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:28,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:03:28,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:03:28,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241116953] [2022-11-21 09:03:28,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241116953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:28,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:28,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:03:28,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860130449] [2022-11-21 09:03:28,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:28,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:03:28,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:03:28,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:03:28,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:03:28,901 INFO L87 Difference]: Start difference. First operand 258 states and 755 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) [2022-11-21 09:03:29,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:29,380 INFO L93 Difference]: Finished difference Result 287 states and 832 transitions. [2022-11-21 09:03:29,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:03:29,380 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 [2022-11-21 09:03:29,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:29,383 INFO L225 Difference]: With dead ends: 287 [2022-11-21 09:03:29,383 INFO L226 Difference]: Without dead ends: 275 [2022-11-21 09:03:29,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:03:29,384 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:29,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 09:03:29,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-11-21 09:03:29,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2022-11-21 09:03:29,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 248 states have (on average 3.2096774193548385) internal successors, (796), 274 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:29,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 796 transitions. [2022-11-21 09:03:29,421 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 796 transitions. Word has length 5 [2022-11-21 09:03:29,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:29,421 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 796 transitions. [2022-11-21 09:03:29,422 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) [2022-11-21 09:03:29,422 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 796 transitions. [2022-11-21 09:03:29,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 09:03:29,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:29,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 09:03:29,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:29,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:03:29,624 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 09:03:29,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:29,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1637370250, now seen corresponding path program 1 times [2022-11-21 09:03:29,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:03:29,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569071595] [2022-11-21 09:03:29,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:29,625 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 [2022-11-21 09:03:29,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:03:29,627 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:03:29,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:29,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 09:03:29,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:29,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:03:29,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:03:29,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:03:29,868 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-21 09:03:29,869 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 [2022-11-21 09:03:29,881 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 [2022-11-21 09:03:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:29,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:03:29,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:03:29,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569071595] [2022-11-21 09:03:29,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1569071595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:29,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:29,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 09:03:29,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083873750] [2022-11-21 09:03:29,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:29,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:03:29,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:03:29,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:03:29,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:03:29,937 INFO L87 Difference]: Start difference. First operand 275 states and 796 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) [2022-11-21 09:03:30,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:30,143 INFO L93 Difference]: Finished difference Result 251 states and 729 transitions. [2022-11-21 09:03:30,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:03:30,143 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 [2022-11-21 09:03:30,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:30,146 INFO L225 Difference]: With dead ends: 251 [2022-11-21 09:03:30,146 INFO L226 Difference]: Without dead ends: 251 [2022-11-21 09:03:30,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:03:30,147 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:30,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 09:03:30,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-21 09:03:30,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-11-21 09:03:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 231 states have (on average 3.155844155844156) internal successors, (729), 250 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:30,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 729 transitions. [2022-11-21 09:03:30,172 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 729 transitions. Word has length 6 [2022-11-21 09:03:30,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:30,172 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 729 transitions. [2022-11-21 09:03:30,172 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) [2022-11-21 09:03:30,172 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 729 transitions. [2022-11-21 09:03:30,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 09:03:30,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:30,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 09:03:30,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:30,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:03:30,388 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 09:03:30,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:30,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1637370252, now seen corresponding path program 1 times [2022-11-21 09:03:30,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:03:30,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566960921] [2022-11-21 09:03:30,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:30,389 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 [2022-11-21 09:03:30,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:03:30,390 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:03:30,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:30,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 09:03:30,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:30,591 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-21 09:03:30,592 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 29 [2022-11-21 09:03:30,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:30,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:03:30,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:03:30,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566960921] [2022-11-21 09:03:30,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566960921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:30,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:30,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 09:03:30,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912031884] [2022-11-21 09:03:30,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:30,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:03:30,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:03:30,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:03:30,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:03:30,635 INFO L87 Difference]: Start difference. First operand 251 states and 729 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) [2022-11-21 09:03:30,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:30,837 INFO L93 Difference]: Finished difference Result 227 states and 662 transitions. [2022-11-21 09:03:30,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:03:30,837 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 [2022-11-21 09:03:30,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:30,839 INFO L225 Difference]: With dead ends: 227 [2022-11-21 09:03:30,839 INFO L226 Difference]: Without dead ends: 218 [2022-11-21 09:03:30,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:03:30,840 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:30,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 09:03:30,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-21 09:03:30,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2022-11-21 09:03:30,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 205 states have (on average 3.1414634146341465) internal successors, (644), 217 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 644 transitions. [2022-11-21 09:03:30,855 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 644 transitions. Word has length 6 [2022-11-21 09:03:30,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:30,855 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 644 transitions. [2022-11-21 09:03:30,856 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) [2022-11-21 09:03:30,856 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 644 transitions. [2022-11-21 09:03:30,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 09:03:30,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:30,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 09:03:30,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:31,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:03:31,071 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 09:03:31,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:31,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1628236404, now seen corresponding path program 1 times [2022-11-21 09:03:31,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:03:31,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898158766] [2022-11-21 09:03:31,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:31,072 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 [2022-11-21 09:03:31,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:03:31,075 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:03:31,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:31,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 09:03:31,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:31,388 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:03:31,389 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 [2022-11-21 09:03:31,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:31,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:03:32,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:32,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:03:32,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898158766] [2022-11-21 09:03:32,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898158766] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:03:32,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:03:32,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-21 09:03:32,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757069287] [2022-11-21 09:03:32,679 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:03:32,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:03:32,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:03:32,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:03:32,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:03:32,681 INFO L87 Difference]: Start difference. First operand 218 states and 644 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2022-11-21 09:03:37,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:37,023 INFO L93 Difference]: Finished difference Result 400 states and 1153 transitions. [2022-11-21 09:03:37,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:03:37,025 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 [2022-11-21 09:03:37,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:37,027 INFO L225 Difference]: With dead ends: 400 [2022-11-21 09:03:37,027 INFO L226 Difference]: Without dead ends: 349 [2022-11-21 09:03:37,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-21 09:03:37,028 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 152 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:37,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 0 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 09:03:37,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-11-21 09:03:37,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 321. [2022-11-21 09:03:37,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 308 states have (on average 3.1948051948051948) internal successors, (984), 320 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:37,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 984 transitions. [2022-11-21 09:03:37,043 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 984 transitions. Word has length 6 [2022-11-21 09:03:37,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:37,044 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 984 transitions. [2022-11-21 09:03:37,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2022-11-21 09:03:37,044 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 984 transitions. [2022-11-21 09:03:37,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 09:03:37,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:37,045 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-21 09:03:37,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:37,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:03:37,254 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 09:03:37,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:37,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1627933969, now seen corresponding path program 2 times [2022-11-21 09:03:37,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:03:37,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91019509] [2022-11-21 09:03:37,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:03:37,255 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 [2022-11-21 09:03:37,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:03:37,256 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:03:37,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:37,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 09:03:37,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:03:37,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 09:03:37,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:37,574 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:03:37,575 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 [2022-11-21 09:03:37,809 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:37,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:03:38,699 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:38,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:03:38,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91019509] [2022-11-21 09:03:38,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91019509] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:03:38,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:03:38,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-21 09:03:38,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785931364] [2022-11-21 09:03:38,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:03:38,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 09:03:38,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:03:38,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 09:03:38,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-21 09:03:38,702 INFO L87 Difference]: Start difference. First operand 321 states and 984 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) [2022-11-21 09:03:43,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:43,788 INFO L93 Difference]: Finished difference Result 1541 states and 4586 transitions. [2022-11-21 09:03:43,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 09:03:43,789 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 [2022-11-21 09:03:43,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:43,800 INFO L225 Difference]: With dead ends: 1541 [2022-11-21 09:03:43,800 INFO L226 Difference]: Without dead ends: 1541 [2022-11-21 09:03:43,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:03:43,801 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 522 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:43,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 0 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-21 09:03:43,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2022-11-21 09:03:43,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 327. [2022-11-21 09:03:43,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 314 states have (on average 3.171974522292994) internal successors, (996), 326 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:43,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 996 transitions. [2022-11-21 09:03:43,833 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 996 transitions. Word has length 6 [2022-11-21 09:03:43,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:43,833 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 996 transitions. [2022-11-21 09:03:43,834 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) [2022-11-21 09:03:43,834 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 996 transitions. [2022-11-21 09:03:43,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 09:03:43,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:43,835 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2022-11-21 09:03:43,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Ended with exit code 0 [2022-11-21 09:03:44,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:03:44,049 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 09:03:44,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:44,049 INFO L85 PathProgramCache]: Analyzing trace with hash -986466141, now seen corresponding path program 2 times [2022-11-21 09:03:44,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:03:44,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319076724] [2022-11-21 09:03:44,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:03:44,050 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 [2022-11-21 09:03:44,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:03:44,053 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:03:44,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:44,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 09:03:44,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:03:44,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 09:03:44,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:44,354 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:03:44,356 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 [2022-11-21 09:03:44,502 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 09:03:44,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:03:44,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:03:44,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319076724] [2022-11-21 09:03:44,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319076724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:44,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:44,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:03:44,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070246125] [2022-11-21 09:03:44,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:44,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:03:44,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:03:44,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:03:44,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:03:44,505 INFO L87 Difference]: Start difference. First operand 327 states and 996 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) [2022-11-21 09:03:44,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:44,905 INFO L93 Difference]: Finished difference Result 155 states and 428 transitions. [2022-11-21 09:03:44,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:03:44,905 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 9 [2022-11-21 09:03:44,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:44,910 INFO L225 Difference]: With dead ends: 155 [2022-11-21 09:03:44,910 INFO L226 Difference]: Without dead ends: 155 [2022-11-21 09:03:44,910 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 [2022-11-21 09:03:44,912 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:44,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 09:03:44,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-21 09:03:44,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 92. [2022-11-21 09:03:44,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 90 states have (on average 2.611111111111111) internal successors, (235), 91 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:44,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 235 transitions. [2022-11-21 09:03:44,920 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 235 transitions. Word has length 9 [2022-11-21 09:03:44,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:44,921 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 235 transitions. [2022-11-21 09:03:44,921 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) [2022-11-21 09:03:44,921 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 235 transitions. [2022-11-21 09:03:44,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 09:03:44,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:44,924 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-21 09:03:44,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-21 09:03:45,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:03:45,134 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 09:03:45,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:45,134 INFO L85 PathProgramCache]: Analyzing trace with hash -2063406415, now seen corresponding path program 3 times [2022-11-21 09:03:45,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:03:45,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247756915] [2022-11-21 09:03:45,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 09:03:45,135 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 [2022-11-21 09:03:45,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:03:45,136 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:03:45,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:03:45,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-21 09:03:45,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:03:45,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-21 09:03:45,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:45,586 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:03:45,586 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 [2022-11-21 09:03:46,302 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:46,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:03:50,162 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:50,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:03:50,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247756915] [2022-11-21 09:03:50,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247756915] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:03:50,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:03:50,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-21 09:03:50,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264822701] [2022-11-21 09:03:50,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:03:50,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 09:03:50,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:03:50,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 09:03:50,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-21 09:03:50,165 INFO L87 Difference]: Start difference. First operand 92 states and 235 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) [2022-11-21 09:04:19,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:19,420 INFO L93 Difference]: Finished difference Result 1605 states and 4306 transitions. [2022-11-21 09:04:19,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 09:04:19,421 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 [2022-11-21 09:04:19,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:19,431 INFO L225 Difference]: With dead ends: 1605 [2022-11-21 09:04:19,432 INFO L226 Difference]: Without dead ends: 1605 [2022-11-21 09:04:19,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 09:04:19,433 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2600 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2600 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:19,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2600 Valid, 0 Invalid, 2358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2336 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2022-11-21 09:04:19,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2022-11-21 09:04:19,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 104. [2022-11-21 09:04:19,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 102 states have (on average 2.5392156862745097) internal successors, (259), 103 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:19,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 259 transitions. [2022-11-21 09:04:19,453 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 259 transitions. Word has length 12 [2022-11-21 09:04:19,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:19,454 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 259 transitions. [2022-11-21 09:04:19,454 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) [2022-11-21 09:04:19,454 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 259 transitions. [2022-11-21 09:04:19,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-21 09:04:19,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:19,456 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] [2022-11-21 09:04:19,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:19,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:04:19,670 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 09:04:19,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:19,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1378320873, now seen corresponding path program 1 times [2022-11-21 09:04:19,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:04:19,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854844713] [2022-11-21 09:04:19,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:19,672 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 [2022-11-21 09:04:19,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:04:19,673 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:04:19,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:19,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 09:04:19,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:20,083 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:04:20,083 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 [2022-11-21 09:04:20,216 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 15 treesize of output 11 [2022-11-21 09:04:20,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:20,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:04:21,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:21,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:04:21,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854844713] [2022-11-21 09:04:21,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854844713] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:04:21,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:04:21,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-21 09:04:21,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201597154] [2022-11-21 09:04:21,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:04:21,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 09:04:21,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:04:21,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 09:04:21,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-21 09:04:21,060 INFO L87 Difference]: Start difference. First operand 104 states and 259 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:21,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:21,968 INFO L93 Difference]: Finished difference Result 139 states and 342 transitions. [2022-11-21 09:04:21,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:04:21,970 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 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 21 [2022-11-21 09:04:21,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:21,971 INFO L225 Difference]: With dead ends: 139 [2022-11-21 09:04:21,971 INFO L226 Difference]: Without dead ends: 139 [2022-11-21 09:04:21,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2022-11-21 09:04:21,972 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 83 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:21,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 0 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 09:04:21,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-21 09:04:21,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-11-21 09:04:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 137 states have (on average 2.4963503649635035) internal successors, (342), 138 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:21,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 342 transitions. [2022-11-21 09:04:21,979 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 342 transitions. Word has length 21 [2022-11-21 09:04:21,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:21,980 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 342 transitions. [2022-11-21 09:04:21,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:21,980 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 342 transitions. [2022-11-21 09:04:21,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-21 09:04:21,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:21,982 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] [2022-11-21 09:04:21,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:22,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:04:22,194 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 09:04:22,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:22,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1300936189, now seen corresponding path program 2 times [2022-11-21 09:04:22,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:04:22,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468947520] [2022-11-21 09:04:22,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:04:22,196 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 [2022-11-21 09:04:22,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:04:22,197 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:04:22,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:22,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 09:04:22,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:04:22,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-21 09:04:22,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:23,128 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 09:04:23,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 251 treesize of output 59 [2022-11-21 09:04:23,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 09:04:23,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:04:23,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:04:23,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468947520] [2022-11-21 09:04:23,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468947520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:23,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:23,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:23,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097870790] [2022-11-21 09:04:23,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:23,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 09:04:23,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:04:23,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 09:04:23,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-21 09:04:23,244 INFO L87 Difference]: Start difference. First operand 139 states and 342 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) [2022-11-21 09:04:25,535 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 [] [2022-11-21 09:04:27,858 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 [] [2022-11-21 09:04:28,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:28,769 INFO L93 Difference]: Finished difference Result 190 states and 501 transitions. [2022-11-21 09:04:28,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 09:04:28,770 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 21 [2022-11-21 09:04:28,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:28,771 INFO L225 Difference]: With dead ends: 190 [2022-11-21 09:04:28,771 INFO L226 Difference]: Without dead ends: 176 [2022-11-21 09:04:28,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-21 09:04:28,772 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:28,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 279 Invalid, 2 Unknown, 0 Unchecked, 5.3s Time] [2022-11-21 09:04:28,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-21 09:04:28,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 165. [2022-11-21 09:04:28,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 163 states have (on average 2.6503067484662575) internal successors, (432), 164 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:28,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 432 transitions. [2022-11-21 09:04:28,779 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 432 transitions. Word has length 21 [2022-11-21 09:04:28,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:28,780 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 432 transitions. [2022-11-21 09:04:28,780 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) [2022-11-21 09:04:28,780 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 432 transitions. [2022-11-21 09:04:28,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-21 09:04:28,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:28,782 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] [2022-11-21 09:04:28,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-21 09:04:28,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:04:28,997 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 09:04:28,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:28,997 INFO L85 PathProgramCache]: Analyzing trace with hash -556233691, now seen corresponding path program 3 times [2022-11-21 09:04:28,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:04:28,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22991611] [2022-11-21 09:04:28,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 09:04:28,998 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 [2022-11-21 09:04:28,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:04:28,999 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:04:29,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:29,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-21 09:04:29,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:04:29,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-21 09:04:29,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:29,973 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 09:04:29,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 251 treesize of output 59 [2022-11-21 09:04:30,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 09:04:30,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:04:30,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:04:30,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22991611] [2022-11-21 09:04:30,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22991611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:30,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:30,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:30,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395407886] [2022-11-21 09:04:30,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:30,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 09:04:30,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:04:30,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 09:04:30,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-21 09:04:30,063 INFO L87 Difference]: Start difference. First operand 165 states and 432 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) [2022-11-21 09:04:32,620 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 [] [2022-11-21 09:04:34,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:34,011 INFO L93 Difference]: Finished difference Result 200 states and 523 transitions. [2022-11-21 09:04:34,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 09:04:34,013 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 21 [2022-11-21 09:04:34,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:34,014 INFO L225 Difference]: With dead ends: 200 [2022-11-21 09:04:34,014 INFO L226 Difference]: Without dead ends: 186 [2022-11-21 09:04:34,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-21 09:04:34,015 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:34,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 289 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-11-21 09:04:34,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-21 09:04:34,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 175. [2022-11-21 09:04:34,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 173 states have (on average 2.601156069364162) internal successors, (450), 174 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:34,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 450 transitions. [2022-11-21 09:04:34,025 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 450 transitions. Word has length 21 [2022-11-21 09:04:34,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:34,026 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 450 transitions. [2022-11-21 09:04:34,026 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) [2022-11-21 09:04:34,026 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 450 transitions. [2022-11-21 09:04:34,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-21 09:04:34,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:34,027 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] [2022-11-21 09:04:34,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:34,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:04:34,244 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-21 09:04:34,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:34,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1770213455, now seen corresponding path program 4 times [2022-11-21 09:04:34,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:04:34,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84776245] [2022-11-21 09:04:34,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 09:04:34,246 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 [2022-11-21 09:04:34,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:04:34,247 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:04:34,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e38584-b315-4a0e-82a9-790497fbf093/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:34,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 09:04:34,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:04:34,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-21 09:04:34,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:34,728 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:04:34,728 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 [2022-11-21 09:04:34,893 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 15 treesize of output 11 [2022-11-21 09:04:35,799 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 09:04:35,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 245 treesize of output 59 [2022-11-21 09:04:35,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:35,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:04:37,850 INFO L321 Elim1Store]: treesize reduction 672, result has 23.7 percent of original size [2022-11-21 09:04:37,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 178 treesize of output 244