./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:54:23,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:54:23,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:54:23,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:54:23,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:54:23,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:54:23,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:54:23,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:54:23,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:54:23,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:54:23,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:54:23,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:54:23,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:54:23,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:54:23,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:54:23,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:54:23,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:54:23,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:54:23,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:54:23,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:54:23,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:54:23,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:54:23,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:54:23,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:54:23,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:54:23,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:54:23,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:54:23,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:54:23,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:54:23,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:54:23,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:54:23,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:54:23,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:54:23,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:54:23,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:54:23,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:54:23,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:54:23,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:54:23,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:54:23,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:54:23,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:54:23,573 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 11:54:23,604 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:54:23,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:54:23,605 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:54:23,605 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:54:23,606 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:54:23,606 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:54:23,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:54:23,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:54:23,607 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:54:23,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:54:23,608 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:54:23,608 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:54:23,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:54:23,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:54:23,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:54:23,609 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:54:23,609 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:54:23,609 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:54:23,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:54:23,610 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:54:23,610 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:54:23,610 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:54:23,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:54:23,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:54:23,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:54:23,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:54:23,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:54:23,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:54:23,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:54:23,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:54:23,612 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_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 [2022-11-20 11:54:23,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:54:24,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:54:24,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:54:24,024 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:54:24,025 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:54:24,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2022-11-20 11:54:27,610 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:54:27,925 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:54:27,926 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2022-11-20 11:54:27,945 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/data/0ce0f1ac4/2b6cbae863874910b7a36e29bd799ee4/FLAG71d043129 [2022-11-20 11:54:27,972 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/data/0ce0f1ac4/2b6cbae863874910b7a36e29bd799ee4 [2022-11-20 11:54:27,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:54:27,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:54:27,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:54:27,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:54:27,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:54:27,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:54:27" (1/1) ... [2022-11-20 11:54:27,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656c5581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:27, skipping insertion in model container [2022-11-20 11:54:27,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:54:27" (1/1) ... [2022-11-20 11:54:28,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:54:28,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:54:28,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:54:28,698 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-20 11:54:28,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@52128c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:28, skipping insertion in model container [2022-11-20 11:54:28,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:54:28,702 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-20 11:54:28,705 INFO L158 Benchmark]: Toolchain (without parser) took 723.94ms. Allocated memory is still 146.8MB. Free memory was 102.4MB in the beginning and 87.7MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 11:54:28,707 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 107.0MB. Free memory was 54.7MB in the beginning and 54.7MB in the end (delta: 67.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:54:28,708 INFO L158 Benchmark]: CACSL2BoogieTranslator took 719.89ms. Allocated memory is still 146.8MB. Free memory was 102.4MB in the beginning and 88.1MB in the end (delta: 14.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 11:54:28,711 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 107.0MB. Free memory was 54.7MB in the beginning and 54.7MB in the end (delta: 67.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 719.89ms. Allocated memory is still 146.8MB. Free memory was 102.4MB in the beginning and 88.1MB in the end (delta: 14.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:54:31,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:54:31,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:54:31,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:54:31,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:54:31,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:54:31,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:54:31,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:54:31,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:54:31,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:54:31,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:54:31,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:54:31,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:54:31,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:54:31,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:54:31,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:54:31,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:54:31,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:54:31,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:54:31,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:54:31,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:54:31,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:54:31,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:54:31,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:54:31,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:54:31,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:54:31,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:54:31,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:54:31,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:54:31,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:54:31,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:54:31,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:54:31,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:54:31,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:54:31,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:54:31,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:54:31,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:54:31,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:54:31,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:54:31,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:54:31,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:54:31,662 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-20 11:54:31,688 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:54:31,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:54:31,689 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:54:31,689 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:54:31,690 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:54:31,690 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:54:31,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:54:31,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:54:31,692 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:54:31,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:54:31,693 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:54:31,693 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:54:31,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:54:31,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:54:31,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:54:31,694 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:54:31,695 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:54:31,695 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:54:31,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:54:31,696 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:54:31,696 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 11:54:31,697 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 11:54:31,697 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:54:31,697 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:54:31,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:54:31,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:54:31,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:54:31,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:54:31,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:54:31,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:54:31,700 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 11:54:31,700 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 11:54:31,701 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 11:54:31,701 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_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 [2022-11-20 11:54:32,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:54:32,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:54:32,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:54:32,187 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:54:32,188 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:54:32,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2022-11-20 11:54:35,741 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:54:36,114 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:54:36,114 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2022-11-20 11:54:36,133 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/data/512a4b7e7/bbaaf74c5df5422a9473f7702ca0b9d0/FLAG7defc6bef [2022-11-20 11:54:36,153 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/data/512a4b7e7/bbaaf74c5df5422a9473f7702ca0b9d0 [2022-11-20 11:54:36,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:54:36,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:54:36,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:54:36,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:54:36,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:54:36,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:54:36" (1/1) ... [2022-11-20 11:54:36,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fc91169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:36, skipping insertion in model container [2022-11-20 11:54:36,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:54:36" (1/1) ... [2022-11-20 11:54:36,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:54:36,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:54:36,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:54:36,787 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 11:54:36,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:54:36,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:54:36,874 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:54:36,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:54:37,005 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:54:37,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:37 WrapperNode [2022-11-20 11:54:37,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:54:37,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:54:37,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:54:37,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:54:37,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:37" (1/1) ... [2022-11-20 11:54:37,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:37" (1/1) ... [2022-11-20 11:54:37,108 INFO L138 Inliner]: procedures = 174, calls = 117, calls flagged for inlining = 29, calls inlined = 14, statements flattened = 184 [2022-11-20 11:54:37,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:54:37,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:54:37,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:54:37,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:54:37,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:37" (1/1) ... [2022-11-20 11:54:37,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:37" (1/1) ... [2022-11-20 11:54:37,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:37" (1/1) ... [2022-11-20 11:54:37,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:37" (1/1) ... [2022-11-20 11:54:37,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:37" (1/1) ... [2022-11-20 11:54:37,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:37" (1/1) ... [2022-11-20 11:54:37,162 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:37" (1/1) ... [2022-11-20 11:54:37,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:37" (1/1) ... [2022-11-20 11:54:37,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:54:37,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:54:37,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:54:37,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:54:37,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:37" (1/1) ... [2022-11-20 11:54:37,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:54:37,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:37,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:54:37,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:54:37,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 11:54:37,275 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2022-11-20 11:54:37,275 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2022-11-20 11:54:37,276 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-11-20 11:54:37,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-11-20 11:54:37,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 11:54:37,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 11:54:37,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:54:37,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:54:37,277 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2022-11-20 11:54:37,277 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2022-11-20 11:54:37,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:54:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:54:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:54:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 11:54:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:54:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 11:54:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2022-11-20 11:54:37,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2022-11-20 11:54:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-20 11:54:37,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-20 11:54:37,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:54:37,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:54:37,602 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:54:37,605 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:54:38,764 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:54:38,775 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:54:38,776 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:54:38,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:54:38 BoogieIcfgContainer [2022-11-20 11:54:38,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:54:38,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:54:38,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:54:38,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:54:38,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:54:36" (1/3) ... [2022-11-20 11:54:38,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a94b00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:54:38, skipping insertion in model container [2022-11-20 11:54:38,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:37" (2/3) ... [2022-11-20 11:54:38,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a94b00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:54:38, skipping insertion in model container [2022-11-20 11:54:38,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:54:38" (3/3) ... [2022-11-20 11:54:38,814 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test23_4.i [2022-11-20 11:54:38,840 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:54:38,840 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2022-11-20 11:54:38,912 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:54:38,920 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;@348eec8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:54:38,920 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2022-11-20 11:54:38,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 107 states have (on average 1.841121495327103) internal successors, (197), 183 states have internal predecessors, (197), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 11:54:38,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 11:54:38,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:38,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:38,944 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:54:38,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:38,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1838385922, now seen corresponding path program 1 times [2022-11-20 11:54:38,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:54:38,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159749302] [2022-11-20 11:54:38,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:38,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:38,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:54:38,980 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:54:38,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 11:54:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:39,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:54:39,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:39,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 11:54:39,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:39,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:39,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:54:39,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159749302] [2022-11-20 11:54:39,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159749302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:39,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:39,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:54:39,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606535349] [2022-11-20 11:54:39,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:39,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:54:39,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:54:39,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:54:39,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:54:39,450 INFO L87 Difference]: Start difference. First operand has 198 states, 107 states have (on average 1.841121495327103) internal successors, (197), 183 states have internal predecessors, (197), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:54:40,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:40,844 INFO L93 Difference]: Finished difference Result 225 states and 241 transitions. [2022-11-20 11:54:40,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:54:40,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-20 11:54:40,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:40,860 INFO L225 Difference]: With dead ends: 225 [2022-11-20 11:54:40,861 INFO L226 Difference]: Without dead ends: 221 [2022-11-20 11:54:40,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:54:40,867 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 28 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:40,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 813 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 11:54:40,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-20 11:54:40,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 205. [2022-11-20 11:54:40,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 113 states have (on average 1.7876106194690264) internal successors, (202), 188 states have internal predecessors, (202), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-20 11:54:40,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 221 transitions. [2022-11-20 11:54:40,934 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 221 transitions. Word has length 12 [2022-11-20 11:54:40,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:40,934 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 221 transitions. [2022-11-20 11:54:40,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:54:40,935 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 221 transitions. [2022-11-20 11:54:40,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 11:54:40,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:40,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:40,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:41,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:41,152 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:54:41,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:41,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1838385921, now seen corresponding path program 1 times [2022-11-20 11:54:41,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:54:41,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419396897] [2022-11-20 11:54:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:41,154 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:41,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:54:41,158 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:54:41,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 11:54:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:41,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:54:41,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:41,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:54:41,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:41,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:41,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:54:41,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419396897] [2022-11-20 11:54:41,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419396897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:41,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:41,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:54:41,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702822781] [2022-11-20 11:54:41,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:41,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:54:41,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:54:41,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:54:41,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:54:41,548 INFO L87 Difference]: Start difference. First operand 205 states and 221 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:54:42,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:42,914 INFO L93 Difference]: Finished difference Result 230 states and 245 transitions. [2022-11-20 11:54:42,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:54:42,918 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-20 11:54:42,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:42,920 INFO L225 Difference]: With dead ends: 230 [2022-11-20 11:54:42,920 INFO L226 Difference]: Without dead ends: 230 [2022-11-20 11:54:42,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:54:42,922 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 35 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:42,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1056 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 11:54:42,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-20 11:54:42,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 205. [2022-11-20 11:54:42,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 113 states have (on average 1.7699115044247788) internal successors, (200), 188 states have internal predecessors, (200), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-20 11:54:42,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 219 transitions. [2022-11-20 11:54:42,948 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 219 transitions. Word has length 12 [2022-11-20 11:54:42,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:42,954 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 219 transitions. [2022-11-20 11:54:42,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:54:42,955 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 219 transitions. [2022-11-20 11:54:42,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 11:54:42,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:42,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:42,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:43,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:43,168 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:54:43,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:43,169 INFO L85 PathProgramCache]: Analyzing trace with hash -95575587, now seen corresponding path program 1 times [2022-11-20 11:54:43,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:54:43,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899472532] [2022-11-20 11:54:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:43,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:43,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:54:43,172 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:54:43,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 11:54:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:43,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:54:43,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:43,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:43,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:43,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:54:43,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899472532] [2022-11-20 11:54:43,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899472532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:43,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:43,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:54:43,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432473999] [2022-11-20 11:54:43,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:43,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:54:43,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:54:43,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:54:43,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:54:43,349 INFO L87 Difference]: Start difference. First operand 205 states and 219 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:54:43,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:43,407 INFO L93 Difference]: Finished difference Result 217 states and 231 transitions. [2022-11-20 11:54:43,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:54:43,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-20 11:54:43,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:43,417 INFO L225 Difference]: With dead ends: 217 [2022-11-20 11:54:43,418 INFO L226 Difference]: Without dead ends: 217 [2022-11-20 11:54:43,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:54:43,420 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 20 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:43,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 812 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:54:43,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-20 11:54:43,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 196. [2022-11-20 11:54:43,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 109 states have (on average 1.761467889908257) internal successors, (192), 180 states have internal predecessors, (192), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-20 11:54:43,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 209 transitions. [2022-11-20 11:54:43,436 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 209 transitions. Word has length 12 [2022-11-20 11:54:43,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:43,436 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 209 transitions. [2022-11-20 11:54:43,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:54:43,437 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 209 transitions. [2022-11-20 11:54:43,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 11:54:43,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:43,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:43,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:54:43,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:43,656 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:54:43,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:43,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1838471554, now seen corresponding path program 1 times [2022-11-20 11:54:43,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:54:43,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153551760] [2022-11-20 11:54:43,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:43,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:43,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:54:43,659 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:54:43,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 11:54:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:43,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:54:43,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:43,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:43,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:43,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:54:43,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153551760] [2022-11-20 11:54:43,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153551760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:43,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:43,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:54:43,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649261110] [2022-11-20 11:54:43,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:43,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:54:43,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:54:43,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:54:43,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:54:43,823 INFO L87 Difference]: Start difference. First operand 196 states and 209 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:54:43,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:43,890 INFO L93 Difference]: Finished difference Result 217 states and 230 transitions. [2022-11-20 11:54:43,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:54:43,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-20 11:54:43,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:43,893 INFO L225 Difference]: With dead ends: 217 [2022-11-20 11:54:43,893 INFO L226 Difference]: Without dead ends: 217 [2022-11-20 11:54:43,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:54:43,899 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 121 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:43,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 750 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:54:43,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-20 11:54:43,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 196. [2022-11-20 11:54:43,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 109 states have (on average 1.7522935779816513) internal successors, (191), 180 states have internal predecessors, (191), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-20 11:54:43,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 208 transitions. [2022-11-20 11:54:43,944 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 208 transitions. Word has length 12 [2022-11-20 11:54:43,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:43,946 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 208 transitions. [2022-11-20 11:54:43,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:54:43,947 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 208 transitions. [2022-11-20 11:54:43,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 11:54:43,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:43,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:43,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:44,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:44,177 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:54:44,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:44,179 INFO L85 PathProgramCache]: Analyzing trace with hash -95661219, now seen corresponding path program 1 times [2022-11-20 11:54:44,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:54:44,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175770324] [2022-11-20 11:54:44,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:44,180 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:44,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:54:44,182 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:54:44,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 11:54:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:44,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:54:44,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:44,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:44,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:54:44,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175770324] [2022-11-20 11:54:44,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175770324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:44,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:44,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:54:44,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716573528] [2022-11-20 11:54:44,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:44,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:54:44,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:54:44,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:54:44,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:54:44,365 INFO L87 Difference]: Start difference. First operand 196 states and 208 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:54:44,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:44,440 INFO L93 Difference]: Finished difference Result 201 states and 212 transitions. [2022-11-20 11:54:44,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:54:44,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-20 11:54:44,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:44,445 INFO L225 Difference]: With dead ends: 201 [2022-11-20 11:54:44,445 INFO L226 Difference]: Without dead ends: 201 [2022-11-20 11:54:44,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:54:44,449 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 104 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:44,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 702 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:54:44,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-20 11:54:44,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 198. [2022-11-20 11:54:44,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 111 states have (on average 1.7387387387387387) internal successors, (193), 182 states have internal predecessors, (193), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-20 11:54:44,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 210 transitions. [2022-11-20 11:54:44,479 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 210 transitions. Word has length 12 [2022-11-20 11:54:44,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:44,480 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 210 transitions. [2022-11-20 11:54:44,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:54:44,480 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 210 transitions. [2022-11-20 11:54:44,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:54:44,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:44,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:44,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:44,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:44,696 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:54:44,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:44,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1329489612, now seen corresponding path program 1 times [2022-11-20 11:54:44,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:54:44,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936729964] [2022-11-20 11:54:44,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:44,697 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:44,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:54:44,699 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:54:44,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 11:54:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:44,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:54:44,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:44,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:44,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:44,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:54:44,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936729964] [2022-11-20 11:54:44,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936729964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:44,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:44,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:54:44,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910086437] [2022-11-20 11:54:44,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:44,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:54:44,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:54:44,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:54:44,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:54:44,814 INFO L87 Difference]: Start difference. First operand 198 states and 210 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:54:45,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:45,393 INFO L93 Difference]: Finished difference Result 210 states and 224 transitions. [2022-11-20 11:54:45,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:54:45,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-20 11:54:45,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:45,395 INFO L225 Difference]: With dead ends: 210 [2022-11-20 11:54:45,395 INFO L226 Difference]: Without dead ends: 202 [2022-11-20 11:54:45,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:54:45,397 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 51 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:45,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 366 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:54:45,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-20 11:54:45,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 192. [2022-11-20 11:54:45,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 106 states have (on average 1.7641509433962264) internal successors, (187), 177 states have internal predecessors, (187), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 11:54:45,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 203 transitions. [2022-11-20 11:54:45,406 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 203 transitions. Word has length 13 [2022-11-20 11:54:45,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:45,406 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 203 transitions. [2022-11-20 11:54:45,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:54:45,407 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 203 transitions. [2022-11-20 11:54:45,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:54:45,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:45,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:45,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:54:45,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:45,621 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:54:45,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:45,621 INFO L85 PathProgramCache]: Analyzing trace with hash -317607953, now seen corresponding path program 1 times [2022-11-20 11:54:45,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:54:45,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849945075] [2022-11-20 11:54:45,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:45,622 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:45,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:54:45,624 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:54:45,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 11:54:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:45,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:54:45,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:45,909 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_23 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_23))))) is different from true [2022-11-20 11:54:46,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:54:46,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:54:46,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:46,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:46,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:54:46,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849945075] [2022-11-20 11:54:46,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849945075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:46,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:46,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:54:46,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239062419] [2022-11-20 11:54:46,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:46,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:54:46,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:54:46,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:54:46,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2022-11-20 11:54:46,130 INFO L87 Difference]: Start difference. First operand 192 states and 203 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:54:47,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:47,570 INFO L93 Difference]: Finished difference Result 202 states and 216 transitions. [2022-11-20 11:54:47,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:54:47,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-20 11:54:47,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:47,573 INFO L225 Difference]: With dead ends: 202 [2022-11-20 11:54:47,573 INFO L226 Difference]: Without dead ends: 202 [2022-11-20 11:54:47,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=76, Unknown=1, NotChecked=18, Total=132 [2022-11-20 11:54:47,574 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 59 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:47,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 470 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 471 Invalid, 0 Unknown, 213 Unchecked, 1.2s Time] [2022-11-20 11:54:47,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-20 11:54:47,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 191. [2022-11-20 11:54:47,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 106 states have (on average 1.7547169811320755) internal successors, (186), 176 states have internal predecessors, (186), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 11:54:47,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 202 transitions. [2022-11-20 11:54:47,583 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 202 transitions. Word has length 16 [2022-11-20 11:54:47,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:47,584 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 202 transitions. [2022-11-20 11:54:47,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:54:47,584 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 202 transitions. [2022-11-20 11:54:47,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:54:47,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:47,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:47,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:47,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:47,799 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:54:47,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:47,802 INFO L85 PathProgramCache]: Analyzing trace with hash -317607954, now seen corresponding path program 1 times [2022-11-20 11:54:47,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:54:47,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371909825] [2022-11-20 11:54:47,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:47,803 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:47,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:54:47,805 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:54:47,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 11:54:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:47,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:54:47,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:48,012 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_38 (_ BitVec 1))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_38) |c_#valid|)))) is different from true [2022-11-20 11:54:48,062 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 11:54:48,062 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 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-20 11:54:48,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:48,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:48,112 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:54:48,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371909825] [2022-11-20 11:54:48,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371909825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:48,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:48,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:54:48,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736198178] [2022-11-20 11:54:48,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:48,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:54:48,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:54:48,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:54:48,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2022-11-20 11:54:48,116 INFO L87 Difference]: Start difference. First operand 191 states and 202 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:54:49,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:49,039 INFO L93 Difference]: Finished difference Result 243 states and 257 transitions. [2022-11-20 11:54:49,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:54:49,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2022-11-20 11:54:49,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:49,042 INFO L225 Difference]: With dead ends: 243 [2022-11-20 11:54:49,043 INFO L226 Difference]: Without dead ends: 243 [2022-11-20 11:54:49,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=61, Unknown=1, NotChecked=16, Total=110 [2022-11-20 11:54:49,044 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 280 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:49,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 349 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 341 Invalid, 0 Unknown, 202 Unchecked, 0.8s Time] [2022-11-20 11:54:49,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-20 11:54:49,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 201. [2022-11-20 11:54:49,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 115 states have (on average 1.7391304347826086) internal successors, (200), 185 states have internal predecessors, (200), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-20 11:54:49,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 218 transitions. [2022-11-20 11:54:49,055 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 218 transitions. Word has length 16 [2022-11-20 11:54:49,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:49,056 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 218 transitions. [2022-11-20 11:54:49,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:54:49,056 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 218 transitions. [2022-11-20 11:54:49,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 11:54:49,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:49,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:49,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:49,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:49,272 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:54:49,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:49,272 INFO L85 PathProgramCache]: Analyzing trace with hash -778576348, now seen corresponding path program 1 times [2022-11-20 11:54:49,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:54:49,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305735125] [2022-11-20 11:54:49,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:49,273 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:49,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:54:49,276 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:54:49,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 11:54:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:49,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:54:49,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:49,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 11:54:49,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:49,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:49,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:54:49,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305735125] [2022-11-20 11:54:49,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305735125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:49,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:49,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:54:49,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003885728] [2022-11-20 11:54:49,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:49,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:54:49,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:54:49,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:54:49,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:54:49,508 INFO L87 Difference]: Start difference. First operand 201 states and 218 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:54:50,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:50,383 INFO L93 Difference]: Finished difference Result 250 states and 274 transitions. [2022-11-20 11:54:50,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:54:50,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-11-20 11:54:50,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:50,386 INFO L225 Difference]: With dead ends: 250 [2022-11-20 11:54:50,386 INFO L226 Difference]: Without dead ends: 250 [2022-11-20 11:54:50,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:54:50,387 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 63 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:50,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 623 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 11:54:50,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-20 11:54:50,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 225. [2022-11-20 11:54:50,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 141 states have (on average 1.7588652482269505) internal successors, (248), 209 states have internal predecessors, (248), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-20 11:54:50,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 266 transitions. [2022-11-20 11:54:50,405 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 266 transitions. Word has length 25 [2022-11-20 11:54:50,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:50,406 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 266 transitions. [2022-11-20 11:54:50,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:54:50,406 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 266 transitions. [2022-11-20 11:54:50,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 11:54:50,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:50,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:50,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:50,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:50,625 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:54:50,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:50,625 INFO L85 PathProgramCache]: Analyzing trace with hash -778576347, now seen corresponding path program 1 times [2022-11-20 11:54:50,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:54:50,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467933711] [2022-11-20 11:54:50,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:50,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:50,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:54:50,628 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:54:50,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 11:54:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:50,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 11:54:50,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:50,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:54:50,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:50,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:50,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:54:50,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467933711] [2022-11-20 11:54:50,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467933711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:50,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:50,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:54:50,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926700103] [2022-11-20 11:54:50,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:50,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:54:50,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:54:50,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:54:50,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:54:50,955 INFO L87 Difference]: Start difference. First operand 225 states and 266 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:54:52,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:52,166 INFO L93 Difference]: Finished difference Result 282 states and 309 transitions. [2022-11-20 11:54:52,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:54:52,167 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-11-20 11:54:52,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:52,169 INFO L225 Difference]: With dead ends: 282 [2022-11-20 11:54:52,169 INFO L226 Difference]: Without dead ends: 282 [2022-11-20 11:54:52,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:54:52,170 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 97 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:52,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 621 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 11:54:52,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-20 11:54:52,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 227. [2022-11-20 11:54:52,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 144 states have (on average 1.7361111111111112) internal successors, (250), 210 states have internal predecessors, (250), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-20 11:54:52,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 271 transitions. [2022-11-20 11:54:52,185 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 271 transitions. Word has length 25 [2022-11-20 11:54:52,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:52,187 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 271 transitions. [2022-11-20 11:54:52,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:54:52,187 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 271 transitions. [2022-11-20 11:54:52,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 11:54:52,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:52,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:52,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:52,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:52,413 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:54:52,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:52,413 INFO L85 PathProgramCache]: Analyzing trace with hash -887499840, now seen corresponding path program 1 times [2022-11-20 11:54:52,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:54:52,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506173392] [2022-11-20 11:54:52,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:52,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:52,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:54:52,415 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:54:52,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 11:54:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:52,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:54:52,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:52,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:52,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:52,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:54:52,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506173392] [2022-11-20 11:54:52,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506173392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:52,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:52,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:54:52,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156353666] [2022-11-20 11:54:52,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:52,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:54:52,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:54:52,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:54:52,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:54:52,611 INFO L87 Difference]: Start difference. First operand 227 states and 271 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:54:52,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:52,755 INFO L93 Difference]: Finished difference Result 227 states and 270 transitions. [2022-11-20 11:54:52,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:54:52,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-11-20 11:54:52,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:52,759 INFO L225 Difference]: With dead ends: 227 [2022-11-20 11:54:52,759 INFO L226 Difference]: Without dead ends: 227 [2022-11-20 11:54:52,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:54:52,761 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 112 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:52,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 800 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:54:52,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-20 11:54:52,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2022-11-20 11:54:52,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 144 states have (on average 1.7291666666666667) internal successors, (249), 210 states have internal predecessors, (249), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-20 11:54:52,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 270 transitions. [2022-11-20 11:54:52,770 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 270 transitions. Word has length 27 [2022-11-20 11:54:52,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:52,771 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 270 transitions. [2022-11-20 11:54:52,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:54:52,771 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 270 transitions. [2022-11-20 11:54:52,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 11:54:52,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:52,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:52,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 11:54:52,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:52,987 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:54:52,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:52,987 INFO L85 PathProgramCache]: Analyzing trace with hash -542371696, now seen corresponding path program 1 times [2022-11-20 11:54:52,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:54:52,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145146772] [2022-11-20 11:54:52,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:52,988 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:52,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:54:52,989 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:54:52,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 11:54:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:53,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 11:54:53,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:53,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 11:54:53,352 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 11:54:53,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 11:54:53,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:53,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:53,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:54:53,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145146772] [2022-11-20 11:54:53,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145146772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:53,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:53,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:54:53,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908435155] [2022-11-20 11:54:53,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:53,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:54:53,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:54:53,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:54:53,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:54:53,467 INFO L87 Difference]: Start difference. First operand 227 states and 270 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:54:54,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:54,698 INFO L93 Difference]: Finished difference Result 240 states and 280 transitions. [2022-11-20 11:54:54,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:54:54,699 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-11-20 11:54:54,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:54,701 INFO L225 Difference]: With dead ends: 240 [2022-11-20 11:54:54,701 INFO L226 Difference]: Without dead ends: 240 [2022-11-20 11:54:54,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:54:54,702 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 187 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:54,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 511 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 11:54:54,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-20 11:54:54,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 223. [2022-11-20 11:54:54,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 144 states have (on average 1.6736111111111112) internal successors, (241), 206 states have internal predecessors, (241), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-20 11:54:54,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 262 transitions. [2022-11-20 11:54:54,722 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 262 transitions. Word has length 33 [2022-11-20 11:54:54,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:54,722 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 262 transitions. [2022-11-20 11:54:54,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:54:54,723 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 262 transitions. [2022-11-20 11:54:54,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 11:54:54,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:54,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:54,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:54,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:54,940 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:54:54,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:54,940 INFO L85 PathProgramCache]: Analyzing trace with hash -542371695, now seen corresponding path program 1 times [2022-11-20 11:54:54,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:54:54,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851208064] [2022-11-20 11:54:54,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:54,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:54,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:54:54,943 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:54:54,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-20 11:54:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:55,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:54:55,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:55,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:54:55,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 11:54:55,270 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_213 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| v_ArrVal_213) |c_#length|)) (= (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|) (_ bv0 1)))) is different from true [2022-11-20 11:54:55,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:54:55,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:54:55,334 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 11:54:55,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 11:54:55,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:55,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:55,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:54:55,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851208064] [2022-11-20 11:54:55,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851208064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:55,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:55,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:54:55,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022337386] [2022-11-20 11:54:55,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:55,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:54:55,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:54:55,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:54:55,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2022-11-20 11:54:55,442 INFO L87 Difference]: Start difference. First operand 223 states and 262 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:54:56,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:56,682 INFO L93 Difference]: Finished difference Result 278 states and 305 transitions. [2022-11-20 11:54:56,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:54:56,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-11-20 11:54:56,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:56,685 INFO L225 Difference]: With dead ends: 278 [2022-11-20 11:54:56,685 INFO L226 Difference]: Without dead ends: 278 [2022-11-20 11:54:56,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=29, Unknown=1, NotChecked=10, Total=56 [2022-11-20 11:54:56,687 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 178 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 203 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:56,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 366 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 396 Invalid, 0 Unknown, 203 Unchecked, 1.2s Time] [2022-11-20 11:54:56,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-20 11:54:56,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 223. [2022-11-20 11:54:56,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 144 states have (on average 1.6458333333333333) internal successors, (237), 206 states have internal predecessors, (237), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-20 11:54:56,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 258 transitions. [2022-11-20 11:54:56,697 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 258 transitions. Word has length 33 [2022-11-20 11:54:56,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:56,697 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 258 transitions. [2022-11-20 11:54:56,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:54:56,698 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 258 transitions. [2022-11-20 11:54:56,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 11:54:56,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:56,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:56,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:54:56,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:56,915 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:54:56,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:56,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1528197373, now seen corresponding path program 1 times [2022-11-20 11:54:56,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:54:56,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987023694] [2022-11-20 11:54:56,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:56,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:56,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:54:56,918 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:54:56,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-20 11:54:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:57,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:54:57,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:57,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:57,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:57,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:54:57,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987023694] [2022-11-20 11:54:57,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987023694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:57,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:57,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:54:57,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364671770] [2022-11-20 11:54:57,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:57,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:54:57,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:54:57,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:54:57,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:54:57,181 INFO L87 Difference]: Start difference. First operand 223 states and 258 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:54:57,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:57,211 INFO L93 Difference]: Finished difference Result 265 states and 304 transitions. [2022-11-20 11:54:57,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:54:57,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-11-20 11:54:57,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:57,214 INFO L225 Difference]: With dead ends: 265 [2022-11-20 11:54:57,215 INFO L226 Difference]: Without dead ends: 265 [2022-11-20 11:54:57,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:54:57,216 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 37 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:57,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 568 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:54:57,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-20 11:54:57,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 227. [2022-11-20 11:54:57,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 148 states have (on average 1.6283783783783783) internal successors, (241), 210 states have internal predecessors, (241), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-20 11:54:57,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 262 transitions. [2022-11-20 11:54:57,237 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 262 transitions. Word has length 35 [2022-11-20 11:54:57,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:57,238 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 262 transitions. [2022-11-20 11:54:57,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:54:57,238 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 262 transitions. [2022-11-20 11:54:57,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 11:54:57,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:57,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:57,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:54:57,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:57,456 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:54:57,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:57,456 INFO L85 PathProgramCache]: Analyzing trace with hash -129478379, now seen corresponding path program 1 times [2022-11-20 11:54:57,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:54:57,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135808948] [2022-11-20 11:54:57,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:57,457 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:57,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:54:57,458 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:54:57,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-20 11:54:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:57,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:54:57,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:58,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:58,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:58,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:54:58,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135808948] [2022-11-20 11:54:58,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135808948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:58,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:58,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:54:58,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120226967] [2022-11-20 11:54:58,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:58,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:54:58,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:54:58,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:54:58,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:54:58,276 INFO L87 Difference]: Start difference. First operand 227 states and 262 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:54:58,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:58,290 INFO L93 Difference]: Finished difference Result 246 states and 282 transitions. [2022-11-20 11:54:58,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:54:58,291 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-11-20 11:54:58,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:58,293 INFO L225 Difference]: With dead ends: 246 [2022-11-20 11:54:58,293 INFO L226 Difference]: Without dead ends: 246 [2022-11-20 11:54:58,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:54:58,294 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 27 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:58,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1002 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 69 Unchecked, 0.0s Time] [2022-11-20 11:54:58,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-20 11:54:58,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2022-11-20 11:54:58,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 166 states have (on average 1.572289156626506) internal successors, (261), 228 states have internal predecessors, (261), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-20 11:54:58,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 282 transitions. [2022-11-20 11:54:58,304 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 282 transitions. Word has length 36 [2022-11-20 11:54:58,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:58,304 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 282 transitions. [2022-11-20 11:54:58,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:54:58,305 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 282 transitions. [2022-11-20 11:54:58,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 11:54:58,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:58,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:58,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:58,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:58,521 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:54:58,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:58,521 INFO L85 PathProgramCache]: Analyzing trace with hash 189837640, now seen corresponding path program 1 times [2022-11-20 11:54:58,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:54:58,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099299283] [2022-11-20 11:54:58,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:58,522 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:58,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:54:58,523 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:54:58,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-20 11:54:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:58,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:54:58,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:58,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:58,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:54:58,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099299283] [2022-11-20 11:54:58,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099299283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:58,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:58,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:54:58,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535388752] [2022-11-20 11:54:58,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:58,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:54:58,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:54:58,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:54:58,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:54:58,756 INFO L87 Difference]: Start difference. First operand 246 states and 282 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:54:58,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:58,793 INFO L93 Difference]: Finished difference Result 269 states and 307 transitions. [2022-11-20 11:54:58,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:54:58,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-20 11:54:58,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:58,796 INFO L225 Difference]: With dead ends: 269 [2022-11-20 11:54:58,796 INFO L226 Difference]: Without dead ends: 269 [2022-11-20 11:54:58,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:54:58,797 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 43 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:58,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 566 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:54:58,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-11-20 11:54:58,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 248. [2022-11-20 11:54:58,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 168 states have (on average 1.5654761904761905) internal successors, (263), 230 states have internal predecessors, (263), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-20 11:54:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 284 transitions. [2022-11-20 11:54:58,806 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 284 transitions. Word has length 40 [2022-11-20 11:54:58,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:58,807 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 284 transitions. [2022-11-20 11:54:58,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:54:58,807 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 284 transitions. [2022-11-20 11:54:58,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 11:54:58,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:58,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:58,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:59,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:59,022 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:54:59,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:59,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1958974084, now seen corresponding path program 1 times [2022-11-20 11:54:59,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:54:59,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579286806] [2022-11-20 11:54:59,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:59,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:54:59,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:54:59,025 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:54:59,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-20 11:54:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:59,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:54:59,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:59,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 11:54:59,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:59,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:59,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:54:59,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579286806] [2022-11-20 11:54:59,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579286806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:59,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:59,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:54:59,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084467467] [2022-11-20 11:54:59,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:59,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:54:59,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:54:59,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:54:59,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:54:59,441 INFO L87 Difference]: Start difference. First operand 248 states and 284 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:55:00,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:55:00,739 INFO L93 Difference]: Finished difference Result 290 states and 319 transitions. [2022-11-20 11:55:00,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:55:00,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-20 11:55:00,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:55:00,741 INFO L225 Difference]: With dead ends: 290 [2022-11-20 11:55:00,741 INFO L226 Difference]: Without dead ends: 290 [2022-11-20 11:55:00,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:55:00,743 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 118 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:55:00,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 801 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 11:55:00,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-11-20 11:55:00,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 247. [2022-11-20 11:55:00,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 168 states have (on average 1.5476190476190477) internal successors, (260), 229 states have internal predecessors, (260), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-20 11:55:00,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 281 transitions. [2022-11-20 11:55:00,753 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 281 transitions. Word has length 42 [2022-11-20 11:55:00,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:55:00,753 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 281 transitions. [2022-11-20 11:55:00,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:55:00,754 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 281 transitions. [2022-11-20 11:55:00,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 11:55:00,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:55:00,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:55:00,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:55:00,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:00,971 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:55:00,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:55:00,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1958974083, now seen corresponding path program 1 times [2022-11-20 11:55:00,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:55:00,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700270310] [2022-11-20 11:55:00,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:55:00,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:00,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:55:00,974 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:55:00,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-20 11:55:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:01,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:55:01,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:55:01,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:55:01,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:55:01,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:55:01,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:55:01,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700270310] [2022-11-20 11:55:01,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700270310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:55:01,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:55:01,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:55:01,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190789112] [2022-11-20 11:55:01,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:55:01,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:55:01,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:55:01,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:55:01,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:55:01,524 INFO L87 Difference]: Start difference. First operand 247 states and 281 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:55:03,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:55:03,124 INFO L93 Difference]: Finished difference Result 316 states and 345 transitions. [2022-11-20 11:55:03,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:55:03,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-20 11:55:03,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:55:03,127 INFO L225 Difference]: With dead ends: 316 [2022-11-20 11:55:03,127 INFO L226 Difference]: Without dead ends: 316 [2022-11-20 11:55:03,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:55:03,128 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 142 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:55:03,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 827 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 11:55:03,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-11-20 11:55:03,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 247. [2022-11-20 11:55:03,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 168 states have (on average 1.5357142857142858) internal successors, (258), 229 states have internal predecessors, (258), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-20 11:55:03,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 279 transitions. [2022-11-20 11:55:03,138 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 279 transitions. Word has length 42 [2022-11-20 11:55:03,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:55:03,139 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 279 transitions. [2022-11-20 11:55:03,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:55:03,139 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 279 transitions. [2022-11-20 11:55:03,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 11:55:03,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:55:03,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:55:03,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 11:55:03,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:03,354 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:55:03,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:55:03,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2045419631, now seen corresponding path program 1 times [2022-11-20 11:55:03,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:55:03,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773312628] [2022-11-20 11:55:03,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:55:03,356 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:03,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:55:03,357 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:55:03,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-20 11:55:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:03,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 11:55:03,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:55:03,810 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 11:55:03,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 11:55:04,207 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 11:55:04,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-20 11:55:04,318 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 7 treesize of output 5 [2022-11-20 11:55:04,482 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 11:55:04,482 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 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-20 11:55:05,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:05,257 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 11:55:05,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 31 [2022-11-20 11:55:05,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:55:05,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:55:05,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:55:05,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773312628] [2022-11-20 11:55:05,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773312628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:55:05,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:55:05,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 11:55:05,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497414670] [2022-11-20 11:55:05,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:55:05,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:55:05,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:55:05,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:55:05,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:55:05,381 INFO L87 Difference]: Start difference. First operand 247 states and 279 transitions. Second operand has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:55:06,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:55:06,460 INFO L93 Difference]: Finished difference Result 305 states and 339 transitions. [2022-11-20 11:55:06,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:55:06,461 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2022-11-20 11:55:06,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:55:06,462 INFO L225 Difference]: With dead ends: 305 [2022-11-20 11:55:06,462 INFO L226 Difference]: Without dead ends: 305 [2022-11-20 11:55:06,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:55:06,464 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 120 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 610 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:55:06,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1354 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 390 Invalid, 0 Unknown, 610 Unchecked, 0.9s Time] [2022-11-20 11:55:06,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-20 11:55:06,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 266. [2022-11-20 11:55:06,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 185 states have (on average 1.5297297297297296) internal successors, (283), 246 states have internal predecessors, (283), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-20 11:55:06,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 307 transitions. [2022-11-20 11:55:06,473 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 307 transitions. Word has length 42 [2022-11-20 11:55:06,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:55:06,474 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 307 transitions. [2022-11-20 11:55:06,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:55:06,474 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 307 transitions. [2022-11-20 11:55:06,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 11:55:06,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:55:06,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:55:06,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-20 11:55:06,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:06,697 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:55:06,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:55:06,698 INFO L85 PathProgramCache]: Analyzing trace with hash 2045419632, now seen corresponding path program 1 times [2022-11-20 11:55:06,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:55:06,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736115581] [2022-11-20 11:55:06,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:55:06,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:06,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:55:06,700 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:55:06,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-20 11:55:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:06,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 11:55:06,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:55:07,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:07,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:55:07,234 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:55:07,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 11:55:07,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:07,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:55:07,866 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 11:55:07,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:55:08,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:55:08,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:55:08,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:55:08,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736115581] [2022-11-20 11:55:08,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736115581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:55:08,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:55:08,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:55:08,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601950584] [2022-11-20 11:55:08,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:55:08,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:55:08,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:55:08,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:55:08,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=106, Unknown=1, NotChecked=0, Total=132 [2022-11-20 11:55:08,159 INFO L87 Difference]: Start difference. First operand 266 states and 307 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:55:10,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:55:10,057 INFO L93 Difference]: Finished difference Result 274 states and 313 transitions. [2022-11-20 11:55:10,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:55:10,058 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2022-11-20 11:55:10,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:55:10,060 INFO L225 Difference]: With dead ends: 274 [2022-11-20 11:55:10,060 INFO L226 Difference]: Without dead ends: 274 [2022-11-20 11:55:10,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=249, Unknown=1, NotChecked=0, Total=306 [2022-11-20 11:55:10,061 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 289 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 248 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:55:10,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 672 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 675 Invalid, 0 Unknown, 248 Unchecked, 1.6s Time] [2022-11-20 11:55:10,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-11-20 11:55:10,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 264. [2022-11-20 11:55:10,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 185 states have (on average 1.508108108108108) internal successors, (279), 244 states have internal predecessors, (279), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-20 11:55:10,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 303 transitions. [2022-11-20 11:55:10,071 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 303 transitions. Word has length 42 [2022-11-20 11:55:10,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:55:10,071 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 303 transitions. [2022-11-20 11:55:10,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:55:10,072 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 303 transitions. [2022-11-20 11:55:10,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 11:55:10,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:55:10,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:55:10,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-20 11:55:10,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:10,288 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:55:10,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:55:10,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1016480774, now seen corresponding path program 1 times [2022-11-20 11:55:10,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:55:10,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092396969] [2022-11-20 11:55:10,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:55:10,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:10,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:55:10,290 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:55:10,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-20 11:55:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:10,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:55:10,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:55:10,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:55:10,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:55:10,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:55:10,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092396969] [2022-11-20 11:55:10,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092396969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:55:10,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:55:10,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:55:10,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361892303] [2022-11-20 11:55:10,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:55:10,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:55:10,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:55:10,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:55:10,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:55:10,505 INFO L87 Difference]: Start difference. First operand 264 states and 303 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:55:10,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:55:10,540 INFO L93 Difference]: Finished difference Result 286 states and 324 transitions. [2022-11-20 11:55:10,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:55:10,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-11-20 11:55:10,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:55:10,542 INFO L225 Difference]: With dead ends: 286 [2022-11-20 11:55:10,543 INFO L226 Difference]: Without dead ends: 286 [2022-11-20 11:55:10,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:55:10,544 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 48 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:55:10,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 546 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:55:10,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-11-20 11:55:10,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 266. [2022-11-20 11:55:10,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 187 states have (on average 1.4973262032085561) internal successors, (280), 246 states have internal predecessors, (280), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-20 11:55:10,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 304 transitions. [2022-11-20 11:55:10,559 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 304 transitions. Word has length 43 [2022-11-20 11:55:10,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:55:10,560 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 304 transitions. [2022-11-20 11:55:10,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:55:10,560 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 304 transitions. [2022-11-20 11:55:10,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 11:55:10,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:55:10,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:55:10,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-20 11:55:10,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:10,778 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:55:10,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:55:10,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1899527314, now seen corresponding path program 1 times [2022-11-20 11:55:10,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:55:10,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941955051] [2022-11-20 11:55:10,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:55:10,779 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:10,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:55:10,780 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:55:10,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-20 11:55:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:11,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-20 11:55:11,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:55:11,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 11:55:11,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:55:11,431 INFO L321 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2022-11-20 11:55:11,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2022-11-20 11:55:11,530 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 11:55:11,531 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 19 treesize of output 11 [2022-11-20 11:55:12,011 INFO L321 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2022-11-20 11:55:12,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2022-11-20 11:55:12,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2022-11-20 11:55:12,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2022-11-20 11:55:13,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:13,631 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 11:55:13,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 43 [2022-11-20 11:55:13,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 11 [2022-11-20 11:55:13,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:55:13,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:55:13,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:55:13,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941955051] [2022-11-20 11:55:13,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941955051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:55:13,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:55:13,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-20 11:55:13,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624636214] [2022-11-20 11:55:13,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:55:13,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:55:13,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:55:13,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:55:13,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:55:13,978 INFO L87 Difference]: Start difference. First operand 266 states and 304 transitions. Second operand has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:55:14,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:55:14,790 INFO L93 Difference]: Finished difference Result 276 states and 311 transitions. [2022-11-20 11:55:14,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:55:14,793 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-20 11:55:14,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:55:14,795 INFO L225 Difference]: With dead ends: 276 [2022-11-20 11:55:14,796 INFO L226 Difference]: Without dead ends: 276 [2022-11-20 11:55:14,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:55:14,797 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 63 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 224 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:55:14,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 875 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 316 Invalid, 0 Unknown, 224 Unchecked, 0.7s Time] [2022-11-20 11:55:14,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-11-20 11:55:14,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 266. [2022-11-20 11:55:14,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 187 states have (on average 1.4919786096256684) internal successors, (279), 246 states have internal predecessors, (279), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-20 11:55:14,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 303 transitions. [2022-11-20 11:55:14,806 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 303 transitions. Word has length 45 [2022-11-20 11:55:14,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:55:14,807 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 303 transitions. [2022-11-20 11:55:14,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:55:14,807 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 303 transitions. [2022-11-20 11:55:14,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 11:55:14,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:55:14,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:55:14,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-20 11:55:15,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:15,024 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:55:15,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:55:15,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1899527313, now seen corresponding path program 1 times [2022-11-20 11:55:15,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:55:15,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466010735] [2022-11-20 11:55:15,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:55:15,025 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:15,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:55:15,026 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:55:15,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-20 11:55:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:15,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-20 11:55:15,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:55:15,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 11:55:15,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:55:15,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:55:15,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:55:16,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:16,137 INFO L321 Elim1Store]: treesize reduction 36, result has 25.0 percent of original size [2022-11-20 11:55:16,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 43 [2022-11-20 11:55:16,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:16,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 11:55:16,346 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 9 treesize of output 3 [2022-11-20 11:55:16,373 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 11:55:16,374 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 19 treesize of output 11 [2022-11-20 11:55:17,001 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-20 11:55:17,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-20 11:55:17,062 INFO L321 Elim1Store]: treesize reduction 26, result has 33.3 percent of original size [2022-11-20 11:55:17,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 26 [2022-11-20 11:55:17,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:55:17,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-20 11:55:17,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-20 11:55:17,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:55:18,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-20 11:55:18,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 12 [2022-11-20 11:55:19,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:55:19,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:55:19,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:55:19,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466010735] [2022-11-20 11:55:19,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466010735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:55:19,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:55:19,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:55:19,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790610125] [2022-11-20 11:55:19,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:55:19,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:55:19,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:55:19,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:55:19,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:55:19,065 INFO L87 Difference]: Start difference. First operand 266 states and 303 transitions. Second operand has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:55:19,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:55:19,612 INFO L93 Difference]: Finished difference Result 267 states and 303 transitions. [2022-11-20 11:55:19,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:55:19,613 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-20 11:55:19,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:55:19,615 INFO L225 Difference]: With dead ends: 267 [2022-11-20 11:55:19,615 INFO L226 Difference]: Without dead ends: 267 [2022-11-20 11:55:19,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:55:19,616 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 39 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 337 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:55:19,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 994 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 337 Unchecked, 0.1s Time] [2022-11-20 11:55:19,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-20 11:55:19,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 266. [2022-11-20 11:55:19,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 187 states have (on average 1.4866310160427807) internal successors, (278), 246 states have internal predecessors, (278), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-20 11:55:19,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 302 transitions. [2022-11-20 11:55:19,625 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 302 transitions. Word has length 45 [2022-11-20 11:55:19,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:55:19,626 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 302 transitions. [2022-11-20 11:55:19,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:55:19,626 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 302 transitions. [2022-11-20 11:55:19,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 11:55:19,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:55:19,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:55:19,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-20 11:55:19,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:19,843 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:55:19,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:55:19,844 INFO L85 PathProgramCache]: Analyzing trace with hash 218805826, now seen corresponding path program 1 times [2022-11-20 11:55:19,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:55:19,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672114142] [2022-11-20 11:55:19,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:55:19,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:19,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:55:19,846 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:55:19,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-20 11:55:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:20,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-20 11:55:20,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:55:20,428 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 11:55:20,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 11:55:20,702 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 11:55:20,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 11:55:20,912 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-20 11:55:20,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2022-11-20 11:55:21,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:55:21,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-20 11:55:21,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:55:21,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:55:22,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:55:22,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:55:22,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 11:55:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:55:23,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:55:23,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:55:23,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672114142] [2022-11-20 11:55:23,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672114142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:55:23,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:55:23,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:55:23,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155000486] [2022-11-20 11:55:23,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:55:23,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:55:23,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:55:23,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:55:23,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:55:23,077 INFO L87 Difference]: Start difference. First operand 266 states and 302 transitions. Second operand has 20 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:55:23,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:55:23,922 INFO L93 Difference]: Finished difference Result 277 states and 315 transitions. [2022-11-20 11:55:23,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:55:23,923 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-20 11:55:23,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:55:23,925 INFO L225 Difference]: With dead ends: 277 [2022-11-20 11:55:23,925 INFO L226 Difference]: Without dead ends: 277 [2022-11-20 11:55:23,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:55:23,926 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 68 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 751 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:55:23,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1400 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 385 Invalid, 0 Unknown, 751 Unchecked, 0.6s Time] [2022-11-20 11:55:23,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-20 11:55:23,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 270. [2022-11-20 11:55:23,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 191 states have (on average 1.4816753926701571) internal successors, (283), 250 states have internal predecessors, (283), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-20 11:55:23,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 307 transitions. [2022-11-20 11:55:23,943 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 307 transitions. Word has length 45 [2022-11-20 11:55:23,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:55:23,943 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 307 transitions. [2022-11-20 11:55:23,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:55:23,944 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 307 transitions. [2022-11-20 11:55:23,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 11:55:23,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:55:23,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:55:23,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-20 11:55:24,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:24,163 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:55:24,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:55:24,163 INFO L85 PathProgramCache]: Analyzing trace with hash 218805827, now seen corresponding path program 1 times [2022-11-20 11:55:24,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:55:24,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765787709] [2022-11-20 11:55:24,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:55:24,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:24,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:55:24,165 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:55:24,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-20 11:55:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:24,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-20 11:55:24,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:55:24,706 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 11:55:24,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 11:55:24,896 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 11:55:24,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 11:55:24,934 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:55:24,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 11:55:25,065 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-20 11:55:25,065 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 15 treesize of output 11 [2022-11-20 11:55:25,076 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 9 treesize of output 7 [2022-11-20 11:55:25,367 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-20 11:55:25,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 11:55:25,405 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:55:25,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2022-11-20 11:55:25,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:55:25,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:55:26,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-20 11:55:26,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-20 11:55:26,416 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:55:26,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 11:55:26,423 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 5 treesize of output 3 [2022-11-20 11:55:26,486 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:55:26,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 11:55:26,499 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 5 treesize of output 3 [2022-11-20 11:55:26,716 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:55:26,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 11:55:26,728 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 5 treesize of output 3 [2022-11-20 11:55:26,788 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:55:26,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 11:55:26,800 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 5 treesize of output 3 [2022-11-20 11:55:27,028 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:55:27,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 11:55:27,040 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 5 treesize of output 3 [2022-11-20 11:55:27,094 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:55:27,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 11:55:27,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:55:27,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:27,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:55:27,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:27,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:55:27,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 11:55:27,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 11:55:28,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:55:28,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:55:28,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:55:28,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765787709] [2022-11-20 11:55:28,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765787709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:55:28,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:55:28,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:55:28,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031081972] [2022-11-20 11:55:28,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:55:28,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:55:28,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:55:28,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:55:28,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:55:28,088 INFO L87 Difference]: Start difference. First operand 270 states and 307 transitions. Second operand has 22 states, 20 states have (on average 1.95) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:55:30,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:55:30,623 INFO L93 Difference]: Finished difference Result 277 states and 314 transitions. [2022-11-20 11:55:30,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 11:55:30,624 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.95) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-20 11:55:30,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:55:30,626 INFO L225 Difference]: With dead ends: 277 [2022-11-20 11:55:30,626 INFO L226 Difference]: Without dead ends: 277 [2022-11-20 11:55:30,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 11:55:30,627 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 88 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 618 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:55:30,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 1289 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 711 Invalid, 0 Unknown, 618 Unchecked, 1.6s Time] [2022-11-20 11:55:30,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-20 11:55:30,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 270. [2022-11-20 11:55:30,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 191 states have (on average 1.4764397905759161) internal successors, (282), 250 states have internal predecessors, (282), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-20 11:55:30,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 306 transitions. [2022-11-20 11:55:30,641 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 306 transitions. Word has length 45 [2022-11-20 11:55:30,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:55:30,642 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 306 transitions. [2022-11-20 11:55:30,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.95) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:55:30,642 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 306 transitions. [2022-11-20 11:55:30,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 11:55:30,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:55:30,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:55:30,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-20 11:55:30,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:30,862 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:55:30,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:55:30,862 INFO L85 PathProgramCache]: Analyzing trace with hash -84648785, now seen corresponding path program 1 times [2022-11-20 11:55:30,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:55:30,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215642599] [2022-11-20 11:55:30,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:55:30,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:30,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:55:30,865 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:55:30,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-20 11:55:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:31,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-20 11:55:31,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:55:31,489 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-20 11:55:31,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 41 [2022-11-20 11:55:32,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:55:32,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 11:55:32,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 11:55:32,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:55:32,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:32,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:32,755 INFO L321 Elim1Store]: treesize reduction 36, result has 25.0 percent of original size [2022-11-20 11:55:32,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2022-11-20 11:55:33,047 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:55:33,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 36 [2022-11-20 11:55:33,675 INFO L321 Elim1Store]: treesize reduction 22, result has 55.1 percent of original size [2022-11-20 11:55:33,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 51 [2022-11-20 11:55:34,258 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 11:55:34,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 45 [2022-11-20 11:55:34,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:55:34,515 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 11:55:34,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 45 [2022-11-20 11:55:34,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:55:35,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-20 11:55:36,184 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:55:36,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 28 [2022-11-20 11:55:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:55:36,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:55:36,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:55:36,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1215642599] [2022-11-20 11:55:36,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1215642599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:55:36,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:55:36,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-20 11:55:36,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900743169] [2022-11-20 11:55:36,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:55:36,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 11:55:36,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:55:36,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 11:55:36,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-11-20 11:55:36,612 INFO L87 Difference]: Start difference. First operand 270 states and 306 transitions. Second operand has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:55:39,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:55:39,034 INFO L93 Difference]: Finished difference Result 270 states and 305 transitions. [2022-11-20 11:55:39,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 11:55:39,035 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-20 11:55:39,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:55:39,037 INFO L225 Difference]: With dead ends: 270 [2022-11-20 11:55:39,037 INFO L226 Difference]: Without dead ends: 270 [2022-11-20 11:55:39,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 11:55:39,038 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 14 mSDsluCounter, 2229 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 822 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:55:39,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2393 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 380 Invalid, 0 Unknown, 822 Unchecked, 1.1s Time] [2022-11-20 11:55:39,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-20 11:55:39,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2022-11-20 11:55:39,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 191 states have (on average 1.4712041884816753) internal successors, (281), 250 states have internal predecessors, (281), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-20 11:55:39,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 305 transitions. [2022-11-20 11:55:39,048 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 305 transitions. Word has length 47 [2022-11-20 11:55:39,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:55:39,048 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 305 transitions. [2022-11-20 11:55:39,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:55:39,049 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 305 transitions. [2022-11-20 11:55:39,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 11:55:39,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:55:39,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:55:39,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-20 11:55:39,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:39,266 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting free_reportsErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:55:39,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:55:39,266 INFO L85 PathProgramCache]: Analyzing trace with hash -84648784, now seen corresponding path program 1 times [2022-11-20 11:55:39,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:55:39,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851374956] [2022-11-20 11:55:39,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:55:39,267 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:39,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:55:39,268 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:55:39,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-20 11:55:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:39,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-20 11:55:39,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:55:39,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:55:39,904 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 11:55:39,904 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 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-20 11:55:40,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:55:40,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:55:40,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 11:55:40,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 11:55:41,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 11:55:41,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 11:55:41,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:41,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 11:55:41,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:41,255 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 11:55:41,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 43 [2022-11-20 11:55:41,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-20 11:55:41,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 11:55:42,259 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-20 11:55:42,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-20 11:55:42,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 11:55:42,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-20 11:55:42,885 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 11:55:42,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 61 [2022-11-20 11:55:43,203 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 11:55:43,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 61 [2022-11-20 11:55:43,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-20 11:55:45,099 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 11:55:45,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 31 [2022-11-20 11:55:45,112 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:55:45,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 26 [2022-11-20 11:55:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:55:45,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:55:45,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:55:45,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851374956] [2022-11-20 11:55:45,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851374956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:55:45,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:55:45,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-20 11:55:45,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776285] [2022-11-20 11:55:45,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:55:45,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 11:55:45,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:55:45,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 11:55:45,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:55:45,515 INFO L87 Difference]: Start difference. First operand 270 states and 305 transitions. Second operand has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:55:46,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:55:46,649 INFO L93 Difference]: Finished difference Result 270 states and 304 transitions. [2022-11-20 11:55:46,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 11:55:46,650 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-20 11:55:46,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:55:46,652 INFO L225 Difference]: With dead ends: 270 [2022-11-20 11:55:46,652 INFO L226 Difference]: Without dead ends: 270 [2022-11-20 11:55:46,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2022-11-20 11:55:46,653 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 10 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1029 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:55:46,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1860 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 287 Invalid, 0 Unknown, 1029 Unchecked, 1.0s Time] [2022-11-20 11:55:46,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-20 11:55:46,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2022-11-20 11:55:46,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 191 states have (on average 1.4659685863874345) internal successors, (280), 250 states have internal predecessors, (280), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-20 11:55:46,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 304 transitions. [2022-11-20 11:55:46,662 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 304 transitions. Word has length 47 [2022-11-20 11:55:46,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:55:46,662 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 304 transitions. [2022-11-20 11:55:46,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:55:46,663 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 304 transitions. [2022-11-20 11:55:46,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 11:55:46,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:55:46,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:55:46,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-20 11:55:46,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:46,879 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:55:46,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:55:46,880 INFO L85 PathProgramCache]: Analyzing trace with hash -180994493, now seen corresponding path program 1 times [2022-11-20 11:55:46,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:55:46,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501374864] [2022-11-20 11:55:46,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:55:46,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:55:46,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:55:46,882 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:55:46,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-20 11:55:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:47,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-20 11:55:47,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:55:47,773 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 11:55:47,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 37 [2022-11-20 11:55:48,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:55:48,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:48,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:48,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:48,266 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 11:55:48,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 49 [2022-11-20 11:55:48,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:48,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:48,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:48,423 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-20 11:55:48,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 27 [2022-11-20 11:55:48,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:48,864 INFO L321 Elim1Store]: treesize reduction 134, result has 28.3 percent of original size [2022-11-20 11:55:48,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 42 treesize of output 81 [2022-11-20 11:55:49,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:55:49,559 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 11:55:49,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 37 [2022-11-20 11:55:50,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:50,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:50,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:50,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:50,399 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:55:50,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 105 [2022-11-20 11:55:50,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:50,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:50,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:50,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:50,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-20 11:55:51,684 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:55:51,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 11:55:51,696 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 5 treesize of output 3 [2022-11-20 11:55:51,787 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-20 11:55:51,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 80 [2022-11-20 11:55:52,463 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:55:52,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 11:55:52,469 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 5 treesize of output 3 [2022-11-20 11:55:52,566 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-20 11:55:52,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 80 [2022-11-20 11:55:53,379 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:55:53,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 11:55:53,389 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 5 treesize of output 3 [2022-11-20 11:55:53,499 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-20 11:55:53,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 80 [2022-11-20 11:55:54,459 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-20 11:55:54,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 80 [2022-11-20 11:55:54,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:55:54,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:55:56,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 11:55:57,846 INFO L321 Elim1Store]: treesize reduction 21, result has 48.8 percent of original size [2022-11-20 11:55:57,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 191 treesize of output 158 [2022-11-20 11:56:00,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:56:00,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:56:00,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:56:00,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501374864] [2022-11-20 11:56:00,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501374864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:56:00,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:56:00,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 11:56:00,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266737740] [2022-11-20 11:56:00,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:56:00,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 11:56:00,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:56:00,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 11:56:00,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:56:00,125 INFO L87 Difference]: Start difference. First operand 270 states and 304 transitions. Second operand has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:56:03,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:56:03,061 INFO L93 Difference]: Finished difference Result 279 states and 315 transitions. [2022-11-20 11:56:03,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 11:56:03,062 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-20 11:56:03,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:56:03,063 INFO L225 Difference]: With dead ends: 279 [2022-11-20 11:56:03,063 INFO L226 Difference]: Without dead ends: 279 [2022-11-20 11:56:03,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 11:56:03,064 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 73 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 800 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:56:03,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1634 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 773 Invalid, 0 Unknown, 800 Unchecked, 2.0s Time] [2022-11-20 11:56:03,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-11-20 11:56:03,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 272. [2022-11-20 11:56:03,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 193 states have (on average 1.4663212435233162) internal successors, (283), 252 states have internal predecessors, (283), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-20 11:56:03,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 307 transitions. [2022-11-20 11:56:03,072 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 307 transitions. Word has length 47 [2022-11-20 11:56:03,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:56:03,072 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 307 transitions. [2022-11-20 11:56:03,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:56:03,073 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 307 transitions. [2022-11-20 11:56:03,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 11:56:03,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:56:03,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:56:03,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-20 11:56:03,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:56:03,286 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:56:03,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:56:03,287 INFO L85 PathProgramCache]: Analyzing trace with hash -180994492, now seen corresponding path program 1 times [2022-11-20 11:56:03,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:56:03,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026466314] [2022-11-20 11:56:03,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:56:03,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:56:03,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:56:03,289 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:56:03,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-20 11:56:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:04,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 104 conjunts are in the unsatisfiable core [2022-11-20 11:56:04,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:56:04,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:56:04,340 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-20 11:56:04,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-11-20 11:56:05,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:56:05,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:56:05,198 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-20 11:56:05,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-20 11:56:05,288 INFO L321 Elim1Store]: treesize reduction 78, result has 35.0 percent of original size [2022-11-20 11:56:05,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 67 [2022-11-20 11:56:05,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:56:05,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:56:05,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:56:05,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-20 11:56:05,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-20 11:56:06,044 INFO L321 Elim1Store]: treesize reduction 58, result has 26.6 percent of original size [2022-11-20 11:56:06,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 38 treesize of output 44 [2022-11-20 11:56:06,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 11:56:06,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 11:56:06,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 39 [2022-11-20 11:56:07,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:56:07,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:56:07,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:56:07,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:56:07,714 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:56:07,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 57 [2022-11-20 11:56:07,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:56:07,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:56:07,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:56:07,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:56:07,754 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:56:07,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 78 [2022-11-20 11:56:07,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-20 11:56:08,680 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 11:56:08,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2022-11-20 11:56:08,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:56:08,755 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:56:08,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-20 11:56:08,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-20 11:56:09,017 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 11:56:09,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2022-11-20 11:56:09,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-20 11:56:09,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:56:09,129 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:56:09,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-20 11:56:09,457 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 11:56:09,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2022-11-20 11:56:09,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-20 11:56:09,535 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 11:56:09,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2022-11-20 11:56:09,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:56:09,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:56:09,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-20 11:56:09,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-20 11:56:09,980 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 11:56:09,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2022-11-20 11:56:11,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2022-11-20 11:56:12,390 INFO L321 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-11-20 11:56:12,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 52 [2022-11-20 11:56:12,427 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 11:56:12,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-20 11:56:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:56:12,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:56:12,798 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:56:12,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026466314] [2022-11-20 11:56:12,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026466314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:56:12,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:56:12,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-20 11:56:12,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647555698] [2022-11-20 11:56:12,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:56:12,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 11:56:12,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:56:12,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 11:56:12,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=743, Unknown=0, NotChecked=0, Total=812 [2022-11-20 11:56:12,800 INFO L87 Difference]: Start difference. First operand 272 states and 307 transitions. Second operand has 29 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 24 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:56:14,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:56:14,987 INFO L93 Difference]: Finished difference Result 303 states and 341 transitions. [2022-11-20 11:56:14,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:56:14,988 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 24 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-20 11:56:14,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:56:14,990 INFO L225 Difference]: With dead ends: 303 [2022-11-20 11:56:14,990 INFO L226 Difference]: Without dead ends: 303 [2022-11-20 11:56:14,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=121, Invalid=1285, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 11:56:14,991 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 71 mSDsluCounter, 1698 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1230 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:56:14,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1819 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 525 Invalid, 0 Unknown, 1230 Unchecked, 1.1s Time] [2022-11-20 11:56:14,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-11-20 11:56:14,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 292. [2022-11-20 11:56:14,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 213 states have (on average 1.431924882629108) internal successors, (305), 272 states have internal predecessors, (305), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-20 11:56:15,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 329 transitions. [2022-11-20 11:56:15,001 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 329 transitions. Word has length 47 [2022-11-20 11:56:15,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:56:15,001 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 329 transitions. [2022-11-20 11:56:15,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 24 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:56:15,001 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 329 transitions. [2022-11-20 11:56:15,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 11:56:15,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:56:15,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:56:15,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-20 11:56:15,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:56:15,221 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 11:56:15,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:56:15,221 INFO L85 PathProgramCache]: Analyzing trace with hash -603696318, now seen corresponding path program 1 times [2022-11-20 11:56:15,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:56:15,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493327907] [2022-11-20 11:56:15,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:56:15,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:56:15,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:56:15,223 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:56:15,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-20 11:56:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:56:15,883 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:56:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:56:16,423 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-20 11:56:16,441 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:56:16,443 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 76 remaining) [2022-11-20 11:56:16,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 76 remaining) [2022-11-20 11:56:16,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 76 remaining) [2022-11-20 11:56:16,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 76 remaining) [2022-11-20 11:56:16,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 76 remaining) [2022-11-20 11:56:16,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr4ASSERT_VIOLATIONMEMORY_FREE (70 of 76 remaining) [2022-11-20 11:56:16,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr5ASSERT_VIOLATIONMEMORY_FREE (69 of 76 remaining) [2022-11-20 11:56:16,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr6ASSERT_VIOLATIONMEMORY_FREE (68 of 76 remaining) [2022-11-20 11:56:16,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 76 remaining) [2022-11-20 11:56:16,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 76 remaining) [2022-11-20 11:56:16,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 76 remaining) [2022-11-20 11:56:16,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 76 remaining) [2022-11-20 11:56:16,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 76 remaining) [2022-11-20 11:56:16,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 76 remaining) [2022-11-20 11:56:16,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 76 remaining) [2022-11-20 11:56:16,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 76 remaining) [2022-11-20 11:56:16,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 76 remaining) [2022-11-20 11:56:16,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 76 remaining) [2022-11-20 11:56:16,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 76 remaining) [2022-11-20 11:56:16,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 76 remaining) [2022-11-20 11:56:16,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 76 remaining) [2022-11-20 11:56:16,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 76 remaining) [2022-11-20 11:56:16,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 76 remaining) [2022-11-20 11:56:16,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 76 remaining) [2022-11-20 11:56:16,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 76 remaining) [2022-11-20 11:56:16,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 76 remaining) [2022-11-20 11:56:16,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 76 remaining) [2022-11-20 11:56:16,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 76 remaining) [2022-11-20 11:56:16,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 76 remaining) [2022-11-20 11:56:16,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 76 remaining) [2022-11-20 11:56:16,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 76 remaining) [2022-11-20 11:56:16,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 76 remaining) [2022-11-20 11:56:16,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 76 remaining) [2022-11-20 11:56:16,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 76 remaining) [2022-11-20 11:56:16,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 76 remaining) [2022-11-20 11:56:16,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 76 remaining) [2022-11-20 11:56:16,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 76 remaining) [2022-11-20 11:56:16,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 76 remaining) [2022-11-20 11:56:16,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 76 remaining) [2022-11-20 11:56:16,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 76 remaining) [2022-11-20 11:56:16,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 76 remaining) [2022-11-20 11:56:16,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 76 remaining) [2022-11-20 11:56:16,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 76 remaining) [2022-11-20 11:56:16,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 76 remaining) [2022-11-20 11:56:16,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 76 remaining) [2022-11-20 11:56:16,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 76 remaining) [2022-11-20 11:56:16,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 76 remaining) [2022-11-20 11:56:16,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 76 remaining) [2022-11-20 11:56:16,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 76 remaining) [2022-11-20 11:56:16,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 76 remaining) [2022-11-20 11:56:16,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 76 remaining) [2022-11-20 11:56:16,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 76 remaining) [2022-11-20 11:56:16,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 76 remaining) [2022-11-20 11:56:16,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 76 remaining) [2022-11-20 11:56:16,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 76 remaining) [2022-11-20 11:56:16,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 76 remaining) [2022-11-20 11:56:16,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 76 remaining) [2022-11-20 11:56:16,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE (18 of 76 remaining) [2022-11-20 11:56:16,462 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE (17 of 76 remaining) [2022-11-20 11:56:16,462 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE (16 of 76 remaining) [2022-11-20 11:56:16,462 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 76 remaining) [2022-11-20 11:56:16,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 76 remaining) [2022-11-20 11:56:16,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE (13 of 76 remaining) [2022-11-20 11:56:16,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE (12 of 76 remaining) [2022-11-20 11:56:16,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE (11 of 76 remaining) [2022-11-20 11:56:16,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE (10 of 76 remaining) [2022-11-20 11:56:16,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE (9 of 76 remaining) [2022-11-20 11:56:16,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE (8 of 76 remaining) [2022-11-20 11:56:16,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 76 remaining) [2022-11-20 11:56:16,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 76 remaining) [2022-11-20 11:56:16,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 76 remaining) [2022-11-20 11:56:16,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 76 remaining) [2022-11-20 11:56:16,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE (3 of 76 remaining) [2022-11-20 11:56:16,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE (2 of 76 remaining) [2022-11-20 11:56:16,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_FREE (1 of 76 remaining) [2022-11-20 11:56:16,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK (0 of 76 remaining) [2022-11-20 11:56:16,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-20 11:56:16,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:56:16,689 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:56:16,695 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:56:16,707 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-20 11:56:16,708 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-20 11:56:16,709 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-20 11:56:16,709 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-20 11:56:16,709 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-20 11:56:16,710 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-20 11:56:16,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:56:16 BoogieIcfgContainer [2022-11-20 11:56:16,761 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:56:16,761 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:56:16,762 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:56:16,762 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:56:16,763 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:54:38" (3/4) ... [2022-11-20 11:56:16,765 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 11:56:16,796 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-20 11:56:16,796 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-20 11:56:16,797 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-20 11:56:16,797 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-20 11:56:16,797 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-20 11:56:16,797 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-20 11:56:16,939 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:56:16,940 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:56:16,940 INFO L158 Benchmark]: Toolchain (without parser) took 100782.63ms. Allocated memory was 81.8MB in the beginning and 157.3MB in the end (delta: 75.5MB). Free memory was 60.0MB in the beginning and 121.2MB in the end (delta: -61.2MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2022-11-20 11:56:16,941 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 81.8MB. Free memory is still 58.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:56:16,941 INFO L158 Benchmark]: CACSL2BoogieTranslator took 846.27ms. Allocated memory is still 81.8MB. Free memory was 59.7MB in the beginning and 53.0MB in the end (delta: 6.7MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2022-11-20 11:56:16,941 INFO L158 Benchmark]: Boogie Procedure Inliner took 107.95ms. Allocated memory is still 81.8MB. Free memory was 53.0MB in the beginning and 49.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:56:16,942 INFO L158 Benchmark]: Boogie Preprocessor took 54.52ms. Allocated memory is still 81.8MB. Free memory was 49.9MB in the beginning and 47.1MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 11:56:16,942 INFO L158 Benchmark]: RCFGBuilder took 1609.03ms. Allocated memory was 81.8MB in the beginning and 107.0MB in the end (delta: 25.2MB). Free memory was 47.1MB in the beginning and 51.6MB in the end (delta: -4.5MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2022-11-20 11:56:16,942 INFO L158 Benchmark]: TraceAbstraction took 97977.08ms. Allocated memory was 107.0MB in the beginning and 157.3MB in the end (delta: 50.3MB). Free memory was 51.1MB in the beginning and 105.9MB in the end (delta: -54.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:56:16,943 INFO L158 Benchmark]: Witness Printer took 178.44ms. Allocated memory is still 157.3MB. Free memory was 105.9MB in the beginning and 121.2MB in the end (delta: -15.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 11:56:16,956 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 81.8MB. Free memory is still 58.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 846.27ms. Allocated memory is still 81.8MB. Free memory was 59.7MB in the beginning and 53.0MB in the end (delta: 6.7MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 107.95ms. Allocated memory is still 81.8MB. Free memory was 53.0MB in the beginning and 49.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.52ms. Allocated memory is still 81.8MB. Free memory was 49.9MB in the beginning and 47.1MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1609.03ms. Allocated memory was 81.8MB in the beginning and 107.0MB in the end (delta: 25.2MB). Free memory was 47.1MB in the beginning and 51.6MB in the end (delta: -4.5MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. * TraceAbstraction took 97977.08ms. Allocated memory was 107.0MB in the beginning and 157.3MB in the end (delta: 50.3MB). Free memory was 51.1MB in the beginning and 105.9MB in the end (delta: -54.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 178.44ms. Allocated memory is still 157.3MB. Free memory was 105.9MB in the beginning and 121.2MB in the end (delta: -15.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L855] struct hid_device dev; VAL [dev={2:0}, ldv_global_msg_list={1:0}] [L863] CALL entry_point() [L857] CALL probe_23(&dev) [L838] int ret = - -3; VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, ret=3] [L839] CALL, EXPR ldv_malloc(sizeof(struct hid_report_enum)) VAL [\old(size)=1036, dev={2:0}, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L839] RET, EXPR ldv_malloc(sizeof(struct hid_report_enum)) VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, ldv_malloc(sizeof(struct hid_report_enum))={18:0}, ret=3] [L839] struct hid_report_enum *p = (struct hid_report_enum *)ldv_malloc(sizeof(struct hid_report_enum)); [L840] COND FALSE !(p==0) VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, p={18:0}, ret=3] [L842] CALL LDV_INIT_LIST_HEAD(&p->report_list) VAL [dev={2:0}, ldv_global_msg_list={1:0}, list={18:4}] [L540] list->next = list VAL [dev={2:0}, ldv_global_msg_list={1:0}, list={18:4}, list={18:4}] [L541] list->prev = list VAL [dev={2:0}, ldv_global_msg_list={1:0}, list={18:4}, list={18:4}] [L842] RET LDV_INIT_LIST_HEAD(&p->report_list) VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, p={18:0}, ret=3] [L843] dev->report_enum = p VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, p={18:0}, ret=3] [L844] CALL hid_open_report(dev) [L812] struct hid_parser *parser; [L813] struct hid_item item; VAL [dev={2:0}, device={2:0}, device={2:0}, item={23:0}, ldv_global_msg_list={1:0}] [L814] CALL, EXPR ldv_zalloc(sizeof(struct hid_parser)) VAL [dev={2:0}, ldv_global_msg_list={1:0}] [L533] EXPR, FCALL calloc(size, 1) [L533] return calloc(size, 1); VAL [\old(size)=8, \result={3:0}, calloc(size, 1)={3:0}, dev={2:0}, ldv_global_msg_list={1:0}, size=8] [L814] RET, EXPR ldv_zalloc(sizeof(struct hid_parser)) VAL [dev={2:0}, device={2:0}, device={2:0}, item={23:0}, ldv_global_msg_list={1:0}, ldv_zalloc(sizeof(struct hid_parser))={3:0}] [L814] parser = ldv_zalloc(sizeof(struct hid_parser)) [L815] COND FALSE !(!parser) VAL [dev={2:0}, device={2:0}, device={2:0}, item={23:0}, ldv_global_msg_list={1:0}, parser={3:0}] [L818] parser->device = device VAL [dev={2:0}, device={2:0}, device={2:0}, item={23:0}, ldv_global_msg_list={1:0}, parser={3:0}] [L819] CALL, EXPR ldv_positive() [L519] int r = __VERIFIER_nondet_int(); [L520] COND TRUE r>0 [L520] return r; VAL [\result=1610612738, dev={2:0}, ldv_global_msg_list={1:0}, r=1610612738] [L819] RET, EXPR ldv_positive() [L819] parser->report_id = ldv_positive() VAL [dev={2:0}, device={2:0}, device={2:0}, item={23:0}, ldv_global_msg_list={1:0}, ldv_positive()=1610612738, parser={3:0}] [L820] CALL, EXPR fetch_item(&item) [L778] COND FALSE !(__VERIFIER_nondet_int()) [L781] item->type = 0 VAL [dev={2:0}, item={23:0}, item={23:0}, ldv_global_msg_list={1:0}] [L782] item->a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, dev={2:0}, item={23:0}, item={23:0}, ldv_global_msg_list={1:0}] [L783] item->b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=32768, dev={2:0}, item={23:0}, item={23:0}, ldv_global_msg_list={1:0}] [L784] item->c = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, dev={2:0}, item={23:0}, item={23:0}, ldv_global_msg_list={1:0}] [L785] return 0; VAL [\result=0, dev={2:0}, item={23:0}, item={23:0}, ldv_global_msg_list={1:0}] [L820] RET, EXPR fetch_item(&item) [L820] COND TRUE fetch_item(&item)!=-1 [L821] CALL hid_parser_main(parser, &item) [L800] EXPR parser->device VAL [dev={2:0}, item={23:0}, item={23:0}, ldv_global_msg_list={1:0}, parser={3:0}, parser={3:0}, parser->device={2:0}] [L800] EXPR parser->report_id VAL [dev={2:0}, item={23:0}, item={23:0}, ldv_global_msg_list={1:0}, parser={3:0}, parser={3:0}, parser->device={2:0}, parser->report_id=1610612738] [L800] CALL hid_register_report(parser->device, parser->report_id) [L788] EXPR device->report_enum VAL [\old(id)=1610612738, dev={2:0}, device={2:0}, device={2:0}, device->report_enum={18:0}, id=1610612738, ldv_global_msg_list={1:0}] [L788] struct hid_report_enum *report_enum = device->report_enum; [L789] struct hid_report *report; VAL [\old(id)=1610612738, dev={2:0}, device={2:0}, device={2:0}, id=1610612738, ldv_global_msg_list={1:0}, report_enum={18:0}] [L790] report_enum->report_id_hash[id] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 826]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 826]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 826]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 862]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 198 locations, 76 error locations. Started 1 CEGAR loops. OverallTime: 97.8s, OverallIterations: 30, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 30.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2627 SdHoareTripleChecker+Valid, 23.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2585 mSDsluCounter, 26839 SdHoareTripleChecker+Invalid, 20.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 7356 IncrementalHoareTripleChecker+Unchecked, 22145 mSDsCounter, 247 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9116 IncrementalHoareTripleChecker+Invalid, 16719 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 247 mSolverCounterUnsat, 4694 mSDtfsCounter, 9116 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 994 GetRequests, 615 SyntacticMatches, 18 SemanticMatches, 361 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1425 ImplicationChecksByTransitivity, 30.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=292occurred in iteration=29, InterpolantAutomatonStates: 354, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 29 MinimizatonAttempts, 584 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 4.6s SatisfiabilityAnalysisTime, 51.7s InterpolantComputationTime, 985 NumberOfCodeBlocks, 985 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 909 ConstructedInterpolants, 332 QuantifiedInterpolants, 22379 SizeOfPredicates, 305 NumberOfNonLiveVariables, 5349 ConjunctsInSsa, 774 ConjunctsInUnsatCore, 29 InterpolantComputations, 29 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-20 11:56:17,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16363c40-d4e2-4777-9203-ad179838a8a2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)