./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/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_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/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_e0a7c97d-dfee-4665-a13e-4c2c27efb122/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 f9b434f3343269d91303305376bff127738dc22172486554888e346753333fd7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:10:14,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:10:14,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:10:14,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:10:14,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:10:14,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:10:14,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:10:14,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:10:14,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:10:14,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:10:14,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:10:14,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:10:14,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:10:14,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:10:14,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:10:14,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:10:14,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:10:14,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:10:14,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:10:14,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:10:14,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:10:14,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:10:14,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:10:14,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:10:14,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:10:14,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:10:14,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:10:14,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:10:14,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:10:14,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:10:14,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:10:14,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:10:14,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:10:14,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:10:14,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:10:14,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:10:14,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:10:14,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:10:14,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:10:14,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:10:14,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:10:14,609 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 12:10:14,647 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:10:14,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:10:14,648 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:10:14,648 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:10:14,649 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:10:14,649 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:10:14,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:10:14,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:10:14,658 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:10:14,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:10:14,659 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:10:14,659 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:10:14,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:10:14,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:10:14,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:10:14,660 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 12:10:14,661 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 12:10:14,661 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 12:10:14,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:10:14,661 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:10:14,662 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:10:14,662 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:10:14,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:10:14,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:10:14,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:10:14,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:10:14,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:10:14,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:10:14,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:10:14,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:10:14,664 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_e0a7c97d-dfee-4665-a13e-4c2c27efb122/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9b434f3343269d91303305376bff127738dc22172486554888e346753333fd7 [2022-11-20 12:10:15,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:10:15,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:10:15,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:10:15,076 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:10:15,077 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:10:15,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2022-11-20 12:10:18,204 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:10:18,447 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:10:18,450 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2022-11-20 12:10:18,462 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/data/0d631d7f1/497a4e857e924aee8b3a272dcc83c23a/FLAG3c745808a [2022-11-20 12:10:18,481 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/data/0d631d7f1/497a4e857e924aee8b3a272dcc83c23a [2022-11-20 12:10:18,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:10:18,491 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:10:18,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:10:18,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:10:18,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:10:18,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:18" (1/1) ... [2022-11-20 12:10:18,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43149554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:18, skipping insertion in model container [2022-11-20 12:10:18,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:18" (1/1) ... [2022-11-20 12:10:18,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:10:18,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:10:18,822 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c[3056,3069] [2022-11-20 12:10:18,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:10:18,857 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-20 12:10:18,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5107f280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:18, skipping insertion in model container [2022-11-20 12:10:18,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:10:18,860 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-20 12:10:18,862 INFO L158 Benchmark]: Toolchain (without parser) took 370.56ms. Allocated memory is still 140.5MB. Free memory was 97.2MB in the beginning and 87.1MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:10:18,863 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 100.7MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:10:18,864 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.87ms. Allocated memory is still 140.5MB. Free memory was 96.5MB in the beginning and 87.1MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:10:18,866 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 100.7MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.87ms. Allocated memory is still 140.5MB. Free memory was 96.5MB in the beginning and 87.1MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 125]: 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/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_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/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_e0a7c97d-dfee-4665-a13e-4c2c27efb122/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 f9b434f3343269d91303305376bff127738dc22172486554888e346753333fd7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:10:21,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:10:21,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:10:21,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:10:21,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:10:21,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:10:21,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:10:21,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:10:21,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:10:21,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:10:21,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:10:21,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:10:21,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:10:21,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:10:21,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:10:21,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:10:21,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:10:21,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:10:21,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:10:21,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:10:21,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:10:21,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:10:21,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:10:21,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:10:21,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:10:21,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:10:21,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:10:21,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:10:21,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:10:21,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:10:21,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:10:21,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:10:21,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:10:21,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:10:21,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:10:21,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:10:21,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:10:21,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:10:21,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:10:21,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:10:21,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:10:21,458 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-20 12:10:21,513 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:10:21,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:10:21,516 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:10:21,516 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:10:21,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:10:21,518 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:10:21,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:10:21,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:10:21,519 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:10:21,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:10:21,521 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:10:21,522 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:10:21,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:10:21,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:10:21,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:10:21,523 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 12:10:21,523 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 12:10:21,524 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 12:10:21,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:10:21,524 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:10:21,525 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:10:21,525 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:10:21,525 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:10:21,526 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:10:21,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:10:21,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:10:21,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:10:21,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:10:21,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:10:21,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:10:21,528 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:10:21,528 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:10:21,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:10:21,529 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_e0a7c97d-dfee-4665-a13e-4c2c27efb122/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9b434f3343269d91303305376bff127738dc22172486554888e346753333fd7 [2022-11-20 12:10:22,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:10:22,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:10:22,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:10:22,048 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:10:22,049 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:10:22,051 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2022-11-20 12:10:25,410 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:10:25,658 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:10:25,658 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2022-11-20 12:10:25,670 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/data/5afa2c146/6aead713f8ab4298a18140e297acc5af/FLAG457cbd936 [2022-11-20 12:10:25,695 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/data/5afa2c146/6aead713f8ab4298a18140e297acc5af [2022-11-20 12:10:25,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:10:25,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:10:25,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:10:25,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:10:25,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:10:25,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:25" (1/1) ... [2022-11-20 12:10:25,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76d7fcdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:25, skipping insertion in model container [2022-11-20 12:10:25,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:25" (1/1) ... [2022-11-20 12:10:25,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:10:25,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:10:26,015 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c[3056,3069] [2022-11-20 12:10:26,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:10:26,058 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 12:10:26,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:10:26,091 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c[3056,3069] [2022-11-20 12:10:26,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:10:26,125 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:10:26,152 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c[3056,3069] [2022-11-20 12:10:26,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:10:26,174 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:10:26,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:26 WrapperNode [2022-11-20 12:10:26,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:10:26,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:10:26,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:10:26,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:10:26,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:26" (1/1) ... [2022-11-20 12:10:26,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:26" (1/1) ... [2022-11-20 12:10:26,242 INFO L138 Inliner]: procedures = 27, calls = 50, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 162 [2022-11-20 12:10:26,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:10:26,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:10:26,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:10:26,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:10:26,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:26" (1/1) ... [2022-11-20 12:10:26,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:26" (1/1) ... [2022-11-20 12:10:26,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:26" (1/1) ... [2022-11-20 12:10:26,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:26" (1/1) ... [2022-11-20 12:10:26,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:26" (1/1) ... [2022-11-20 12:10:26,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:26" (1/1) ... [2022-11-20 12:10:26,302 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:26" (1/1) ... [2022-11-20 12:10:26,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:26" (1/1) ... [2022-11-20 12:10:26,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:10:26,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:10:26,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:10:26,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:10:26,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:26" (1/1) ... [2022-11-20 12:10:26,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:10:26,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:26,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:10:26,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:10:26,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:10:26,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:10:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:10:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 12:10:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:10:26,420 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:10:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:10:26,420 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:10:26,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:10:26,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:10:26,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 12:10:26,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 12:10:26,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:10:26,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:10:26,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:10:26,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:10:26,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 12:10:26,424 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:10:26,582 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:10:26,584 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:10:27,198 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:10:27,373 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:10:27,373 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 12:10:27,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:10:27 BoogieIcfgContainer [2022-11-20 12:10:27,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:10:27,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:10:27,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:10:27,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:10:27,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:10:25" (1/3) ... [2022-11-20 12:10:27,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c4ad16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:10:27, skipping insertion in model container [2022-11-20 12:10:27,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:26" (2/3) ... [2022-11-20 12:10:27,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c4ad16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:10:27, skipping insertion in model container [2022-11-20 12:10:27,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:10:27" (3/3) ... [2022-11-20 12:10:27,385 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons.wvr.c [2022-11-20 12:10:27,404 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:10:27,404 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-20 12:10:27,405 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:10:27,545 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 12:10:27,591 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 12:10:27,616 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 174 transitions, 372 flow [2022-11-20 12:10:27,622 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 174 transitions, 372 flow [2022-11-20 12:10:27,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 174 transitions, 372 flow [2022-11-20 12:10:27,716 INFO L130 PetriNetUnfolder]: 11/171 cut-off events. [2022-11-20 12:10:27,716 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:10:27,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 171 events. 11/171 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 153 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 131. Up to 3 conditions per place. [2022-11-20 12:10:27,724 INFO L119 LiptonReduction]: Number of co-enabled transitions 1674 [2022-11-20 12:10:50,385 INFO L134 LiptonReduction]: Checked pairs total: 3569 [2022-11-20 12:10:50,385 INFO L136 LiptonReduction]: Total number of compositions: 178 [2022-11-20 12:10:50,393 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 48 transitions, 120 flow [2022-11-20 12:10:50,457 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 602 states, 538 states have (on average 3.358736059479554) internal successors, (1807), 601 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:50,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:10:50,482 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;@8e6c03c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:10:50,482 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-20 12:10:50,487 INFO L276 IsEmpty]: Start isEmpty. Operand has 602 states, 538 states have (on average 3.358736059479554) internal successors, (1807), 601 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:50,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 12:10:50,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:50,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 12:10:50,493 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:10:50,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:50,499 INFO L85 PathProgramCache]: Analyzing trace with hash 22915, now seen corresponding path program 1 times [2022-11-20 12:10:50,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:50,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172710288] [2022-11-20 12:10:50,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:50,513 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:50,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:50,522 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:10:50,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 12:10:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:50,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:10:50,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:50,865 INFO L321 Elim1Store]: treesize reduction 111, result has 19.0 percent of original size [2022-11-20 12:10:50,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 51 [2022-11-20 12:10:50,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:50,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:50,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:50,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172710288] [2022-11-20 12:10:50,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [172710288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:50,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:50,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:10:50,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822857665] [2022-11-20 12:10:50,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:50,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:10:50,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:50,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:10:50,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:50,988 INFO L87 Difference]: Start difference. First operand has 602 states, 538 states have (on average 3.358736059479554) internal successors, (1807), 601 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:51,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:51,188 INFO L93 Difference]: Finished difference Result 602 states and 1811 transitions. [2022-11-20 12:10:51,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:10:51,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-20 12:10:51,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:51,209 INFO L225 Difference]: With dead ends: 602 [2022-11-20 12:10:51,209 INFO L226 Difference]: Without dead ends: 602 [2022-11-20 12:10:51,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:51,213 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:51,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 39 Unchecked, 0.2s Time] [2022-11-20 12:10:51,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-11-20 12:10:51,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2022-11-20 12:10:51,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 539 states have (on average 3.359925788497217) internal successors, (1811), 601 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:51,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1811 transitions. [2022-11-20 12:10:51,315 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1811 transitions. Word has length 2 [2022-11-20 12:10:51,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:51,318 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 1811 transitions. [2022-11-20 12:10:51,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:51,318 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1811 transitions. [2022-11-20 12:10:51,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 12:10:51,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:51,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 12:10:51,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:51,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:51,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:10:51,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:51,531 INFO L85 PathProgramCache]: Analyzing trace with hash 22916, now seen corresponding path program 1 times [2022-11-20 12:10:51,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:51,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125740731] [2022-11-20 12:10:51,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:51,532 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:51,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:51,534 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:10:51,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 12:10:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:51,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:10:51,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:51,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:10:51,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:10:51,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:10:51,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:10:51,987 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 12:10:51,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 29 [2022-11-20 12:10:52,037 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-20 12:10:52,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-20 12:10:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:52,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:52,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:52,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125740731] [2022-11-20 12:10:52,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125740731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:52,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:52,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:10:52,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689078684] [2022-11-20 12:10:52,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:52,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:10:52,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:52,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:10:52,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:52,114 INFO L87 Difference]: Start difference. First operand 602 states and 1811 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:52,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:52,292 INFO L93 Difference]: Finished difference Result 602 states and 1810 transitions. [2022-11-20 12:10:52,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:10:52,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-20 12:10:52,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:52,298 INFO L225 Difference]: With dead ends: 602 [2022-11-20 12:10:52,298 INFO L226 Difference]: Without dead ends: 602 [2022-11-20 12:10:52,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:52,300 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:52,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 39 Unchecked, 0.2s Time] [2022-11-20 12:10:52,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-11-20 12:10:52,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2022-11-20 12:10:52,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 539 states have (on average 3.358070500927644) internal successors, (1810), 601 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:52,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1810 transitions. [2022-11-20 12:10:52,357 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1810 transitions. Word has length 2 [2022-11-20 12:10:52,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:52,357 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 1810 transitions. [2022-11-20 12:10:52,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:52,357 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1810 transitions. [2022-11-20 12:10:52,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 12:10:52,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:52,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 12:10:52,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:52,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:52,570 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:10:52,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:52,571 INFO L85 PathProgramCache]: Analyzing trace with hash 22783, now seen corresponding path program 1 times [2022-11-20 12:10:52,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:52,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129653903] [2022-11-20 12:10:52,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:52,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:52,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:52,573 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:10:52,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 12:10:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:52,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:10:52,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:52,744 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-20 12:10:52,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-20 12:10:52,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:52,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:52,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:52,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129653903] [2022-11-20 12:10:52,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129653903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:52,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:52,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:10:52,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44515662] [2022-11-20 12:10:52,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:52,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:10:52,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:52,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:10:52,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:52,763 INFO L87 Difference]: Start difference. First operand 602 states and 1810 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:52,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:52,943 INFO L93 Difference]: Finished difference Result 601 states and 1808 transitions. [2022-11-20 12:10:52,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:10:52,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-20 12:10:52,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:52,948 INFO L225 Difference]: With dead ends: 601 [2022-11-20 12:10:52,948 INFO L226 Difference]: Without dead ends: 601 [2022-11-20 12:10:52,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:52,949 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:52,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:10:52,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-11-20 12:10:52,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2022-11-20 12:10:52,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 539 states have (on average 3.354359925788497) internal successors, (1808), 600 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:52,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 1808 transitions. [2022-11-20 12:10:52,983 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 1808 transitions. Word has length 2 [2022-11-20 12:10:52,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:52,984 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 1808 transitions. [2022-11-20 12:10:52,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:52,984 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 1808 transitions. [2022-11-20 12:10:52,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 12:10:52,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:52,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 12:10:53,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -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 12:10:53,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:53,197 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:10:53,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:53,197 INFO L85 PathProgramCache]: Analyzing trace with hash 22784, now seen corresponding path program 1 times [2022-11-20 12:10:53,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:53,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299203733] [2022-11-20 12:10:53,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:53,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:53,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:53,199 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:10:53,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 12:10:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:53,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:10:53,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:53,407 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:10:53,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:10:53,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:53,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:53,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:53,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299203733] [2022-11-20 12:10:53,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299203733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:53,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:53,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:10:53,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5906038] [2022-11-20 12:10:53,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:53,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:10:53,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:53,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:10:53,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:53,452 INFO L87 Difference]: Start difference. First operand 601 states and 1808 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:53,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:53,792 INFO L93 Difference]: Finished difference Result 1196 states and 3606 transitions. [2022-11-20 12:10:53,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:10:53,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-20 12:10:53,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:53,800 INFO L225 Difference]: With dead ends: 1196 [2022-11-20 12:10:53,801 INFO L226 Difference]: Without dead ends: 1196 [2022-11-20 12:10:53,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:53,802 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 37 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:53,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 6 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:10:53,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2022-11-20 12:10:53,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 601. [2022-11-20 12:10:53,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 539 states have (on average 3.352504638218924) internal successors, (1807), 600 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:53,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 1807 transitions. [2022-11-20 12:10:53,829 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 1807 transitions. Word has length 2 [2022-11-20 12:10:53,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:53,829 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 1807 transitions. [2022-11-20 12:10:53,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:53,830 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 1807 transitions. [2022-11-20 12:10:53,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 12:10:53,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:53,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 12:10:53,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 12:10:54,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:54,041 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:10:54,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:54,043 INFO L85 PathProgramCache]: Analyzing trace with hash 709627, now seen corresponding path program 1 times [2022-11-20 12:10:54,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:54,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325888749] [2022-11-20 12:10:54,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:54,043 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:54,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:54,045 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:10:54,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 12:10:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:54,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:10:54,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:54,239 INFO L321 Elim1Store]: treesize reduction 115, result has 16.1 percent of original size [2022-11-20 12:10:54,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 47 [2022-11-20 12:10:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:54,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:54,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:54,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325888749] [2022-11-20 12:10:54,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325888749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:54,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:54,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:10:54,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776793902] [2022-11-20 12:10:54,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:54,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:10:54,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:54,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:10:54,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:54,349 INFO L87 Difference]: Start difference. First operand 601 states and 1807 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:54,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:54,496 INFO L93 Difference]: Finished difference Result 600 states and 1806 transitions. [2022-11-20 12:10:54,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:10:54,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 12:10:54,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:54,501 INFO L225 Difference]: With dead ends: 600 [2022-11-20 12:10:54,501 INFO L226 Difference]: Without dead ends: 600 [2022-11-20 12:10:54,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:54,502 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:54,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 37 Unchecked, 0.1s Time] [2022-11-20 12:10:54,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-11-20 12:10:54,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2022-11-20 12:10:54,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 539 states have (on average 3.3506493506493507) internal successors, (1806), 599 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:54,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 1806 transitions. [2022-11-20 12:10:54,523 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 1806 transitions. Word has length 3 [2022-11-20 12:10:54,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:54,523 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 1806 transitions. [2022-11-20 12:10:54,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:54,524 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1806 transitions. [2022-11-20 12:10:54,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 12:10:54,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:54,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 12:10:54,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:54,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:54,736 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:10:54,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:54,737 INFO L85 PathProgramCache]: Analyzing trace with hash 709628, now seen corresponding path program 1 times [2022-11-20 12:10:54,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:54,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842119931] [2022-11-20 12:10:54,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:54,737 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:54,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:54,739 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:10:54,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 12:10:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:54,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:10:54,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:54,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:10:54,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:10:54,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:10:54,969 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-20 12:10:54,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 33 [2022-11-20 12:10:54,992 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-20 12:10:54,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-20 12:10:55,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:55,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:10:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:55,245 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:55,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842119931] [2022-11-20 12:10:55,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842119931] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:55,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:10:55,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-11-20 12:10:55,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330028952] [2022-11-20 12:10:55,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:55,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:10:55,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:55,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:10:55,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:10:55,247 INFO L87 Difference]: Start difference. First operand 600 states and 1806 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:55,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:55,475 INFO L93 Difference]: Finished difference Result 515 states and 1511 transitions. [2022-11-20 12:10:55,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:10:55,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 12:10:55,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:55,480 INFO L225 Difference]: With dead ends: 515 [2022-11-20 12:10:55,480 INFO L226 Difference]: Without dead ends: 515 [2022-11-20 12:10:55,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:10:55,481 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 75 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:55,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 3 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:10:55,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-11-20 12:10:55,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2022-11-20 12:10:55,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 464 states have (on average 3.2564655172413794) internal successors, (1511), 514 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:55,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 1511 transitions. [2022-11-20 12:10:55,499 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 1511 transitions. Word has length 3 [2022-11-20 12:10:55,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:55,499 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 1511 transitions. [2022-11-20 12:10:55,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:55,500 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 1511 transitions. [2022-11-20 12:10:55,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 12:10:55,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:55,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 12:10:55,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -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 12:10:55,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:55,712 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:10:55,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:55,713 INFO L85 PathProgramCache]: Analyzing trace with hash 709496, now seen corresponding path program 1 times [2022-11-20 12:10:55,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:55,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69065456] [2022-11-20 12:10:55,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:55,714 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:55,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:55,715 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:10:55,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 12:10:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:55,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:10:55,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:55,917 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:10:55,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:10:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:55,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:10:56,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:56,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:56,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69065456] [2022-11-20 12:10:56,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69065456] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:10:56,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:10:56,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-20 12:10:56,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749694856] [2022-11-20 12:10:56,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:10:56,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:10:56,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:56,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:10:56,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:10:56,246 INFO L87 Difference]: Start difference. First operand 515 states and 1511 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:56,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:56,873 INFO L93 Difference]: Finished difference Result 1540 states and 4527 transitions. [2022-11-20 12:10:56,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:10:56,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 12:10:56,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:56,883 INFO L225 Difference]: With dead ends: 1540 [2022-11-20 12:10:56,883 INFO L226 Difference]: Without dead ends: 1540 [2022-11-20 12:10:56,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:10:56,884 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 217 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:56,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 12 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:10:56,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2022-11-20 12:10:56,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 518. [2022-11-20 12:10:56,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 467 states have (on average 3.2483940042826553) internal successors, (1517), 517 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:56,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 1517 transitions. [2022-11-20 12:10:56,910 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 1517 transitions. Word has length 3 [2022-11-20 12:10:56,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:56,910 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 1517 transitions. [2022-11-20 12:10:56,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:56,911 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 1517 transitions. [2022-11-20 12:10:56,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 12:10:56,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:56,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 12:10:56,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:57,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:57,126 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:10:57,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:57,127 INFO L85 PathProgramCache]: Analyzing trace with hash 22036697, now seen corresponding path program 1 times [2022-11-20 12:10:57,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:57,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903911153] [2022-11-20 12:10:57,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:57,127 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:57,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:57,128 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:10:57,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 12:10:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:57,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:10:57,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:57,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:10:57,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:10:57,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:10:57,354 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-20 12:10:57,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-20 12:10:57,370 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 14 treesize of output 12 [2022-11-20 12:10:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:57,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:57,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:57,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903911153] [2022-11-20 12:10:57,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903911153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:57,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:57,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:10:57,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023406102] [2022-11-20 12:10:57,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:57,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:10:57,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:57,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:10:57,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:57,449 INFO L87 Difference]: Start difference. First operand 518 states and 1517 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:57,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:57,556 INFO L93 Difference]: Finished difference Result 521 states and 1527 transitions. [2022-11-20 12:10:57,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:10:57,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 12:10:57,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:57,560 INFO L225 Difference]: With dead ends: 521 [2022-11-20 12:10:57,560 INFO L226 Difference]: Without dead ends: 521 [2022-11-20 12:10:57,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:57,562 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:57,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 35 Unchecked, 0.1s Time] [2022-11-20 12:10:57,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-11-20 12:10:57,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2022-11-20 12:10:57,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 470 states have (on average 3.248936170212766) internal successors, (1527), 520 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:57,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1527 transitions. [2022-11-20 12:10:57,600 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1527 transitions. Word has length 4 [2022-11-20 12:10:57,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:57,600 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 1527 transitions. [2022-11-20 12:10:57,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:57,600 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1527 transitions. [2022-11-20 12:10:57,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 12:10:57,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:57,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 12:10:57,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:57,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:57,815 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:10:57,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:57,815 INFO L85 PathProgramCache]: Analyzing trace with hash 22036698, now seen corresponding path program 1 times [2022-11-20 12:10:57,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:57,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505163841] [2022-11-20 12:10:57,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:57,816 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:57,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:57,817 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:10:57,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 12:10:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:57,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:10:57,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:57,974 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-20 12:10:57,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 40 [2022-11-20 12:10:58,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:58,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:58,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:58,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505163841] [2022-11-20 12:10:58,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505163841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:58,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:58,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:10:58,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313224154] [2022-11-20 12:10:58,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:58,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:10:58,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:58,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:10:58,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:58,074 INFO L87 Difference]: Start difference. First operand 521 states and 1527 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:58,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:58,175 INFO L93 Difference]: Finished difference Result 521 states and 1525 transitions. [2022-11-20 12:10:58,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:10:58,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 12:10:58,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:58,178 INFO L225 Difference]: With dead ends: 521 [2022-11-20 12:10:58,178 INFO L226 Difference]: Without dead ends: 521 [2022-11-20 12:10:58,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:58,179 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:58,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 35 Unchecked, 0.1s Time] [2022-11-20 12:10:58,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-11-20 12:10:58,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2022-11-20 12:10:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 470 states have (on average 3.24468085106383) internal successors, (1525), 520 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:58,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1525 transitions. [2022-11-20 12:10:58,195 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1525 transitions. Word has length 4 [2022-11-20 12:10:58,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:58,196 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 1525 transitions. [2022-11-20 12:10:58,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:58,196 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1525 transitions. [2022-11-20 12:10:58,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 12:10:58,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:58,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 12:10:58,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:58,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:58,408 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:10:58,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:58,409 INFO L85 PathProgramCache]: Analyzing trace with hash 681966929, now seen corresponding path program 1 times [2022-11-20 12:10:58,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:58,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499944972] [2022-11-20 12:10:58,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:58,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:58,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:58,410 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:10:58,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 12:10:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:58,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:10:58,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:58,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:10:58,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:10:58,657 INFO L321 Elim1Store]: treesize reduction 49, result has 38.8 percent of original size [2022-11-20 12:10:58,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 38 [2022-11-20 12:10:58,672 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 14 treesize of output 12 [2022-11-20 12:10:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:58,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:10:59,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:59,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:59,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499944972] [2022-11-20 12:10:59,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499944972] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:10:59,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:10:59,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 12:10:59,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328298524] [2022-11-20 12:10:59,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:10:59,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:10:59,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:59,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:10:59,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:10:59,147 INFO L87 Difference]: Start difference. First operand 521 states and 1525 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:59,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:59,285 INFO L93 Difference]: Finished difference Result 527 states and 1545 transitions. [2022-11-20 12:10:59,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:10:59,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 12:10:59,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:59,289 INFO L225 Difference]: With dead ends: 527 [2022-11-20 12:10:59,289 INFO L226 Difference]: Without dead ends: 527 [2022-11-20 12:10:59,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:10:59,290 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:59,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 16 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 44 Unchecked, 0.1s Time] [2022-11-20 12:10:59,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-11-20 12:10:59,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 524. [2022-11-20 12:10:59,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 473 states have (on average 3.2452431289640593) internal successors, (1535), 523 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:59,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1535 transitions. [2022-11-20 12:10:59,307 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1535 transitions. Word has length 5 [2022-11-20 12:10:59,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:59,307 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 1535 transitions. [2022-11-20 12:10:59,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:59,307 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1535 transitions. [2022-11-20 12:10:59,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 12:10:59,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:59,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 12:10:59,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:59,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:59,519 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:10:59,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:59,520 INFO L85 PathProgramCache]: Analyzing trace with hash 681966930, now seen corresponding path program 1 times [2022-11-20 12:10:59,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:59,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57583702] [2022-11-20 12:10:59,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:59,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:10:59,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:59,521 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:10:59,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 12:10:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:59,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:10:59,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:59,736 INFO L321 Elim1Store]: treesize reduction 101, result has 20.5 percent of original size [2022-11-20 12:10:59,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 44 [2022-11-20 12:10:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:59,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:59,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:59,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57583702] [2022-11-20 12:10:59,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57583702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:59,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:59,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:10:59,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559133004] [2022-11-20 12:10:59,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:59,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:10:59,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:59,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:10:59,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:59,770 INFO L87 Difference]: Start difference. First operand 524 states and 1535 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:59,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:59,913 INFO L93 Difference]: Finished difference Result 504 states and 1486 transitions. [2022-11-20 12:10:59,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:10:59,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 12:10:59,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:59,917 INFO L225 Difference]: With dead ends: 504 [2022-11-20 12:10:59,917 INFO L226 Difference]: Without dead ends: 504 [2022-11-20 12:10:59,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:59,918 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:59,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:10:59,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-11-20 12:10:59,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 501. [2022-11-20 12:10:59,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 456 states have (on average 3.241228070175439) internal successors, (1478), 500 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 1478 transitions. [2022-11-20 12:10:59,934 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 1478 transitions. Word has length 5 [2022-11-20 12:10:59,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:59,934 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 1478 transitions. [2022-11-20 12:10:59,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:59,934 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 1478 transitions. [2022-11-20 12:10:59,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 12:10:59,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:59,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 12:10:59,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -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 12:11:00,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:00,146 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:11:00,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:00,146 INFO L85 PathProgramCache]: Analyzing trace with hash 683132524, now seen corresponding path program 1 times [2022-11-20 12:11:00,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:00,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502969804] [2022-11-20 12:11:00,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:00,147 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:00,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:00,148 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:00,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 12:11:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:00,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:11:00,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:00,335 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-20 12:11:00,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-20 12:11:00,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:00,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:00,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:00,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502969804] [2022-11-20 12:11:00,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502969804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:00,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:00,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:11:00,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7551208] [2022-11-20 12:11:00,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:00,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:11:00,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:00,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:11:00,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:11:00,365 INFO L87 Difference]: Start difference. First operand 501 states and 1478 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:00,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:00,541 INFO L93 Difference]: Finished difference Result 372 states and 1084 transitions. [2022-11-20 12:11:00,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:11:00,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 12:11:00,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:00,544 INFO L225 Difference]: With dead ends: 372 [2022-11-20 12:11:00,544 INFO L226 Difference]: Without dead ends: 372 [2022-11-20 12:11:00,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:11:00,545 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 63 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:00,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 3 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:11:00,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-11-20 12:11:00,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2022-11-20 12:11:00,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 349 states have (on average 3.1060171919770774) internal successors, (1084), 371 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:00,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1084 transitions. [2022-11-20 12:11:00,558 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1084 transitions. Word has length 5 [2022-11-20 12:11:00,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:00,558 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 1084 transitions. [2022-11-20 12:11:00,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:00,559 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1084 transitions. [2022-11-20 12:11:00,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 12:11:00,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:00,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 12:11:00,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 12:11:00,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:00,771 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:11:00,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:00,771 INFO L85 PathProgramCache]: Analyzing trace with hash 683132525, now seen corresponding path program 1 times [2022-11-20 12:11:00,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:00,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292522946] [2022-11-20 12:11:00,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:00,772 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:00,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:00,773 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:00,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-20 12:11:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:00,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:11:00,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:00,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:00,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:00,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:00,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292522946] [2022-11-20 12:11:00,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292522946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:00,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:00,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:11:00,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081415351] [2022-11-20 12:11:00,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:00,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:11:00,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:00,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:11:00,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:11:00,913 INFO L87 Difference]: Start difference. First operand 372 states and 1084 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:01,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:01,226 INFO L93 Difference]: Finished difference Result 531 states and 1456 transitions. [2022-11-20 12:11:01,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:11:01,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 12:11:01,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:01,230 INFO L225 Difference]: With dead ends: 531 [2022-11-20 12:11:01,230 INFO L226 Difference]: Without dead ends: 525 [2022-11-20 12:11:01,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:11:01,231 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 49 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:01,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 9 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:11:01,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-11-20 12:11:01,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 498. [2022-11-20 12:11:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 471 states have (on average 2.978768577494692) internal successors, (1403), 497 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:01,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1403 transitions. [2022-11-20 12:11:01,249 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1403 transitions. Word has length 5 [2022-11-20 12:11:01,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:01,249 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 1403 transitions. [2022-11-20 12:11:01,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:01,250 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1403 transitions. [2022-11-20 12:11:01,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:11:01,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:01,251 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-20 12:11:01,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:01,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:01,468 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:11:01,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:01,468 INFO L85 PathProgramCache]: Analyzing trace with hash -335071488, now seen corresponding path program 2 times [2022-11-20 12:11:01,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:01,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236380805] [2022-11-20 12:11:01,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:11:01,469 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:01,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:01,470 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:01,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-20 12:11:01,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:11:01,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:11:01,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:11:01,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:01,715 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:11:01,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:11:01,894 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:01,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:11:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:02,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:02,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236380805] [2022-11-20 12:11:02,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236380805] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:11:02,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:11:02,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-20 12:11:02,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747413355] [2022-11-20 12:11:02,739 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:11:02,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:11:02,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:02,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:11:02,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:11:02,740 INFO L87 Difference]: Start difference. First operand 498 states and 1403 transitions. Second operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:07,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:07,813 INFO L93 Difference]: Finished difference Result 3424 states and 9966 transitions. [2022-11-20 12:11:07,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:11:07,814 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 12:11:07,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:07,855 INFO L225 Difference]: With dead ends: 3424 [2022-11-20 12:11:07,856 INFO L226 Difference]: Without dead ends: 3424 [2022-11-20 12:11:07,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:11:07,857 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1154 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:07,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 77 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-20 12:11:07,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3424 states. [2022-11-20 12:11:07,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3424 to 504. [2022-11-20 12:11:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 477 states have (on average 2.9664570230607965) internal successors, (1415), 503 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:07,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1415 transitions. [2022-11-20 12:11:07,914 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1415 transitions. Word has length 6 [2022-11-20 12:11:07,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:07,914 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 1415 transitions. [2022-11-20 12:11:07,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:07,915 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1415 transitions. [2022-11-20 12:11:07,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:11:07,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:07,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:11:07,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -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 12:11:08,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:08,136 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:11:08,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:08,136 INFO L85 PathProgramCache]: Analyzing trace with hash -333866763, now seen corresponding path program 1 times [2022-11-20 12:11:08,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:08,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570200799] [2022-11-20 12:11:08,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:08,137 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:08,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:08,140 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:08,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-20 12:11:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:08,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 12:11:08,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:08,391 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:11:08,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:11:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:08,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:11:09,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:09,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:09,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570200799] [2022-11-20 12:11:09,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570200799] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:11:09,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:11:09,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 12:11:09,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828589124] [2022-11-20 12:11:09,377 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:11:09,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:11:09,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:09,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:11:09,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:11:09,378 INFO L87 Difference]: Start difference. First operand 504 states and 1415 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:10,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:10,535 INFO L93 Difference]: Finished difference Result 507 states and 1420 transitions. [2022-11-20 12:11:10,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:11:10,536 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 12:11:10,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:10,539 INFO L225 Difference]: With dead ends: 507 [2022-11-20 12:11:10,539 INFO L226 Difference]: Without dead ends: 507 [2022-11-20 12:11:10,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:11:10,540 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:10,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 17 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 95 Unchecked, 0.2s Time] [2022-11-20 12:11:10,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-11-20 12:11:10,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 504. [2022-11-20 12:11:10,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 477 states have (on average 2.9643605870020964) internal successors, (1414), 503 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:10,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1414 transitions. [2022-11-20 12:11:10,557 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1414 transitions. Word has length 6 [2022-11-20 12:11:10,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:10,558 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 1414 transitions. [2022-11-20 12:11:10,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:10,558 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1414 transitions. [2022-11-20 12:11:10,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:11:10,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:10,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:11:10,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:10,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:10,771 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:11:10,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:10,771 INFO L85 PathProgramCache]: Analyzing trace with hash -297552457, now seen corresponding path program 1 times [2022-11-20 12:11:10,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:10,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839732530] [2022-11-20 12:11:10,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:10,772 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:10,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:10,773 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:10,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-20 12:11:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:10,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:11:10,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:10,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:11,024 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-20 12:11:11,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-11-20 12:11:11,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 84 [2022-11-20 12:11:11,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:11,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:11,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:11,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839732530] [2022-11-20 12:11:11,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839732530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:11,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:11,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:11:11,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730194268] [2022-11-20 12:11:11,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:11,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:11,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:11,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:11,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:11,132 INFO L87 Difference]: Start difference. First operand 504 states and 1414 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:11,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:11,294 INFO L93 Difference]: Finished difference Result 461 states and 1293 transitions. [2022-11-20 12:11:11,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:11,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 12:11:11,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:11,297 INFO L225 Difference]: With dead ends: 461 [2022-11-20 12:11:11,298 INFO L226 Difference]: Without dead ends: 461 [2022-11-20 12:11:11,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:11,298 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:11,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:11:11,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-11-20 12:11:11,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2022-11-20 12:11:11,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 440 states have (on average 2.9386363636363635) internal successors, (1293), 460 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:11,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 1293 transitions. [2022-11-20 12:11:11,313 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 1293 transitions. Word has length 6 [2022-11-20 12:11:11,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:11,314 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 1293 transitions. [2022-11-20 12:11:11,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:11,314 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 1293 transitions. [2022-11-20 12:11:11,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:11:11,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:11,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:11:11,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:11,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:11,526 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:11:11,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:11,527 INFO L85 PathProgramCache]: Analyzing trace with hash -297552455, now seen corresponding path program 1 times [2022-11-20 12:11:11,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:11,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398689517] [2022-11-20 12:11:11,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:11,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:11,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:11,528 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:11,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-20 12:11:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:11,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:11:11,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:11,766 INFO L321 Elim1Store]: treesize reduction 88, result has 30.7 percent of original size [2022-11-20 12:11:11,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 46 [2022-11-20 12:11:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:11,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:11,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:11,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398689517] [2022-11-20 12:11:11,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398689517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:11,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:11,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:11:11,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385610901] [2022-11-20 12:11:11,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:11,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:11,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:11,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:11,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:11,806 INFO L87 Difference]: Start difference. First operand 461 states and 1293 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:11,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:11,948 INFO L93 Difference]: Finished difference Result 418 states and 1172 transitions. [2022-11-20 12:11:11,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:11,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 12:11:11,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:11,952 INFO L225 Difference]: With dead ends: 418 [2022-11-20 12:11:11,952 INFO L226 Difference]: Without dead ends: 418 [2022-11-20 12:11:11,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:11,953 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:11,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:11:11,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-11-20 12:11:11,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2022-11-20 12:11:11,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 403 states have (on average 2.9081885856079404) internal successors, (1172), 417 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:11,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1172 transitions. [2022-11-20 12:11:11,968 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1172 transitions. Word has length 6 [2022-11-20 12:11:11,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:11,968 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 1172 transitions. [2022-11-20 12:11:11,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:11,969 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1172 transitions. [2022-11-20 12:11:11,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:11:11,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:11,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:11:11,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -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 12:11:12,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:12,182 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:11:12,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:12,182 INFO L85 PathProgramCache]: Analyzing trace with hash -297726246, now seen corresponding path program 1 times [2022-11-20 12:11:12,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:12,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101826006] [2022-11-20 12:11:12,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:12,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:12,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:12,184 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:12,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-20 12:11:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:12,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:11:12,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:12,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:12,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:12,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:12,412 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-20 12:11:12,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-20 12:11:12,435 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 14 treesize of output 12 [2022-11-20 12:11:12,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:12,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:12,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:12,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101826006] [2022-11-20 12:11:12,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101826006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:12,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:12,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:11:12,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712460822] [2022-11-20 12:11:12,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:12,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:12,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:12,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:12,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:12,550 INFO L87 Difference]: Start difference. First operand 418 states and 1172 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:12,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:12,658 INFO L93 Difference]: Finished difference Result 418 states and 1171 transitions. [2022-11-20 12:11:12,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:12,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 12:11:12,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:12,661 INFO L225 Difference]: With dead ends: 418 [2022-11-20 12:11:12,662 INFO L226 Difference]: Without dead ends: 418 [2022-11-20 12:11:12,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:12,662 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:12,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 27 Unchecked, 0.1s Time] [2022-11-20 12:11:12,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-11-20 12:11:12,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2022-11-20 12:11:12,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 403 states have (on average 2.905707196029777) internal successors, (1171), 417 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:12,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1171 transitions. [2022-11-20 12:11:12,676 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1171 transitions. Word has length 6 [2022-11-20 12:11:12,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:12,676 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 1171 transitions. [2022-11-20 12:11:12,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:12,676 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1171 transitions. [2022-11-20 12:11:12,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:11:12,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:12,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:11:12,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -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 12:11:12,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:12,888 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:11:12,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:12,889 INFO L85 PathProgramCache]: Analyzing trace with hash -297728602, now seen corresponding path program 1 times [2022-11-20 12:11:12,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:12,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258903478] [2022-11-20 12:11:12,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:12,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:12,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:12,890 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:12,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-20 12:11:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:12,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:11:12,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:13,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:13,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:13,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:13,093 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-20 12:11:13,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-20 12:11:13,116 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 14 treesize of output 12 [2022-11-20 12:11:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:13,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:13,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:13,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258903478] [2022-11-20 12:11:13,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258903478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:13,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:13,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:11:13,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160494972] [2022-11-20 12:11:13,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:13,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:13,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:13,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:13,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:13,228 INFO L87 Difference]: Start difference. First operand 418 states and 1171 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:13,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:13,328 INFO L93 Difference]: Finished difference Result 417 states and 1170 transitions. [2022-11-20 12:11:13,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:13,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 12:11:13,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:13,331 INFO L225 Difference]: With dead ends: 417 [2022-11-20 12:11:13,332 INFO L226 Difference]: Without dead ends: 417 [2022-11-20 12:11:13,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:13,332 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:13,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 27 Unchecked, 0.1s Time] [2022-11-20 12:11:13,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-11-20 12:11:13,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2022-11-20 12:11:13,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 403 states have (on average 2.903225806451613) internal successors, (1170), 416 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:13,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 1170 transitions. [2022-11-20 12:11:13,350 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 1170 transitions. Word has length 6 [2022-11-20 12:11:13,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:13,350 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 1170 transitions. [2022-11-20 12:11:13,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:13,351 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 1170 transitions. [2022-11-20 12:11:13,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 12:11:13,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:13,352 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2022-11-20 12:11:13,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -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 12:11:13,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:13,567 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:11:13,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:13,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1797239215, now seen corresponding path program 2 times [2022-11-20 12:11:13,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:13,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134968797] [2022-11-20 12:11:13,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:11:13,568 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:13,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:13,569 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:13,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-20 12:11:13,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:11:13,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:11:13,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:11:13,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:13,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:13,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:13,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:13,800 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-20 12:11:13,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-20 12:11:13,816 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 14 treesize of output 12 [2022-11-20 12:11:13,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:11:13,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:13,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:13,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134968797] [2022-11-20 12:11:13,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134968797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:13,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:13,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:11:13,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333991345] [2022-11-20 12:11:13,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:13,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:13,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:13,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:13,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:13,935 INFO L87 Difference]: Start difference. First operand 417 states and 1170 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:14,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:14,048 INFO L93 Difference]: Finished difference Result 417 states and 1172 transitions. [2022-11-20 12:11:14,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:14,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 12:11:14,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:14,051 INFO L225 Difference]: With dead ends: 417 [2022-11-20 12:11:14,051 INFO L226 Difference]: Without dead ends: 417 [2022-11-20 12:11:14,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:14,052 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:14,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2022-11-20 12:11:14,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-11-20 12:11:14,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2022-11-20 12:11:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 403 states have (on average 2.9081885856079404) internal successors, (1172), 416 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 1172 transitions. [2022-11-20 12:11:14,065 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 1172 transitions. Word has length 7 [2022-11-20 12:11:14,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:14,065 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 1172 transitions. [2022-11-20 12:11:14,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:14,065 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 1172 transitions. [2022-11-20 12:11:14,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 12:11:14,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:14,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:14,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:14,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:14,278 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:11:14,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:14,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1759760312, now seen corresponding path program 1 times [2022-11-20 12:11:14,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:14,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24685465] [2022-11-20 12:11:14,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:14,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:14,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:14,280 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:14,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-20 12:11:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:14,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 12:11:14,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:14,578 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:11:14,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:11:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:14,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:11:15,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:15,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:15,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24685465] [2022-11-20 12:11:15,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24685465] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:11:15,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:11:15,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 12:11:15,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090909800] [2022-11-20 12:11:15,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:11:15,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:11:15,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:15,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:11:15,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:11:15,581 INFO L87 Difference]: Start difference. First operand 417 states and 1172 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:16,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:16,703 INFO L93 Difference]: Finished difference Result 424 states and 1188 transitions. [2022-11-20 12:11:16,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:11:16,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 12:11:16,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:16,707 INFO L225 Difference]: With dead ends: 424 [2022-11-20 12:11:16,707 INFO L226 Difference]: Without dead ends: 424 [2022-11-20 12:11:16,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:11:16,708 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:16,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 26 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 83 Unchecked, 0.3s Time] [2022-11-20 12:11:16,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-11-20 12:11:16,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 419. [2022-11-20 12:11:16,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 405 states have (on average 2.906172839506173) internal successors, (1177), 418 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:16,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1177 transitions. [2022-11-20 12:11:16,722 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1177 transitions. Word has length 7 [2022-11-20 12:11:16,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:16,722 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 1177 transitions. [2022-11-20 12:11:16,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:16,723 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1177 transitions. [2022-11-20 12:11:16,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 12:11:16,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:16,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:16,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -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 12:11:16,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:16,937 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:11:16,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:16,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1759933102, now seen corresponding path program 1 times [2022-11-20 12:11:16,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:16,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106499784] [2022-11-20 12:11:16,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:16,938 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:16,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:16,939 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:16,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-20 12:11:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:17,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 12:11:17,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:17,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:17,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:17,190 INFO L321 Elim1Store]: treesize reduction 49, result has 38.8 percent of original size [2022-11-20 12:11:17,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 38 [2022-11-20 12:11:17,205 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 14 treesize of output 12 [2022-11-20 12:11:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:17,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:11:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:17,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:17,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106499784] [2022-11-20 12:11:17,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [106499784] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:11:17,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:11:17,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 12:11:17,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901722487] [2022-11-20 12:11:17,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:11:17,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:11:17,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:17,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:11:17,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:11:17,767 INFO L87 Difference]: Start difference. First operand 419 states and 1177 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:18,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:18,233 INFO L93 Difference]: Finished difference Result 702 states and 2088 transitions. [2022-11-20 12:11:18,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:11:18,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 12:11:18,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:18,237 INFO L225 Difference]: With dead ends: 702 [2022-11-20 12:11:18,237 INFO L226 Difference]: Without dead ends: 702 [2022-11-20 12:11:18,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:11:18,238 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 59 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:18,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 27 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 63 Invalid, 0 Unknown, 146 Unchecked, 0.4s Time] [2022-11-20 12:11:18,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-11-20 12:11:18,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 473. [2022-11-20 12:11:18,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 459 states have (on average 3.037037037037037) internal successors, (1394), 472 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:18,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1394 transitions. [2022-11-20 12:11:18,255 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1394 transitions. Word has length 7 [2022-11-20 12:11:18,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:18,255 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 1394 transitions. [2022-11-20 12:11:18,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:18,256 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1394 transitions. [2022-11-20 12:11:18,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 12:11:18,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:18,257 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2022-11-20 12:11:18,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:18,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:18,468 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:11:18,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:18,469 INFO L85 PathProgramCache]: Analyzing trace with hash 120154101, now seen corresponding path program 2 times [2022-11-20 12:11:18,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:18,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943646365] [2022-11-20 12:11:18,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:11:18,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:18,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:18,471 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:18,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-20 12:11:18,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:11:18,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:11:18,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:11:18,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:18,725 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:11:18,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:11:18,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:11:18,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:18,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:18,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943646365] [2022-11-20 12:11:18,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943646365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:18,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:18,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:11:18,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117130017] [2022-11-20 12:11:18,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:18,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:11:18,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:18,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:11:18,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:11:18,823 INFO L87 Difference]: Start difference. First operand 473 states and 1394 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:19,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:19,008 INFO L93 Difference]: Finished difference Result 384 states and 1083 transitions. [2022-11-20 12:11:19,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:11:19,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 12:11:19,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:19,011 INFO L225 Difference]: With dead ends: 384 [2022-11-20 12:11:19,011 INFO L226 Difference]: Without dead ends: 384 [2022-11-20 12:11:19,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:11:19,012 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:19,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:11:19,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-11-20 12:11:19,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 382. [2022-11-20 12:11:19,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 376 states have (on average 2.867021276595745) internal successors, (1078), 381 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:19,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1078 transitions. [2022-11-20 12:11:19,034 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1078 transitions. Word has length 8 [2022-11-20 12:11:19,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:19,035 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 1078 transitions. [2022-11-20 12:11:19,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:19,035 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1078 transitions. [2022-11-20 12:11:19,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 12:11:19,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:19,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:19,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:19,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:19,247 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:11:19,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:19,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1276576152, now seen corresponding path program 1 times [2022-11-20 12:11:19,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:19,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101800488] [2022-11-20 12:11:19,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:19,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:19,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:19,249 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:19,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-20 12:11:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:19,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 12:11:19,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:19,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:19,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:19,495 INFO L321 Elim1Store]: treesize reduction 49, result has 38.8 percent of original size [2022-11-20 12:11:19,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 38 [2022-11-20 12:11:19,509 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 14 treesize of output 12 [2022-11-20 12:11:19,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:19,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:11:20,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:20,102 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:20,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101800488] [2022-11-20 12:11:20,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101800488] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:11:20,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:11:20,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 12:11:20,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061785775] [2022-11-20 12:11:20,102 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:11:20,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:11:20,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:20,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:11:20,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:11:20,103 INFO L87 Difference]: Start difference. First operand 382 states and 1078 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:20,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:20,343 INFO L93 Difference]: Finished difference Result 381 states and 1072 transitions. [2022-11-20 12:11:20,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:11:20,344 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 12:11:20,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:20,345 INFO L225 Difference]: With dead ends: 381 [2022-11-20 12:11:20,345 INFO L226 Difference]: Without dead ends: 381 [2022-11-20 12:11:20,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:11:20,346 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 44 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:20,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 17 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 74 Unchecked, 0.2s Time] [2022-11-20 12:11:20,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-11-20 12:11:20,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 316. [2022-11-20 12:11:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 311 states have (on average 2.7909967845659165) internal successors, (868), 315 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:20,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 868 transitions. [2022-11-20 12:11:20,356 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 868 transitions. Word has length 8 [2022-11-20 12:11:20,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:20,356 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 868 transitions. [2022-11-20 12:11:20,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:20,357 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 868 transitions. [2022-11-20 12:11:20,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 12:11:20,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:20,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:20,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:20,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:20,569 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:11:20,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:20,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1814914966, now seen corresponding path program 1 times [2022-11-20 12:11:20,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:20,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358678561] [2022-11-20 12:11:20,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:20,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:20,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:20,571 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:20,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-20 12:11:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:20,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:11:20,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:20,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:20,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:20,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:20,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358678561] [2022-11-20 12:11:20,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358678561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:20,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:20,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:11:20,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530231665] [2022-11-20 12:11:20,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:20,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:20,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:20,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:20,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:20,696 INFO L87 Difference]: Start difference. First operand 316 states and 868 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:20,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:20,819 INFO L93 Difference]: Finished difference Result 254 states and 661 transitions. [2022-11-20 12:11:20,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:20,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 12:11:20,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:20,821 INFO L225 Difference]: With dead ends: 254 [2022-11-20 12:11:20,821 INFO L226 Difference]: Without dead ends: 240 [2022-11-20 12:11:20,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:20,822 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:20,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 3 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:11:20,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-20 12:11:20,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2022-11-20 12:11:20,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 237 states have (on average 2.649789029535865) internal successors, (628), 239 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:20,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 628 transitions. [2022-11-20 12:11:20,829 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 628 transitions. Word has length 8 [2022-11-20 12:11:20,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:20,829 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 628 transitions. [2022-11-20 12:11:20,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:20,830 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 628 transitions. [2022-11-20 12:11:20,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 12:11:20,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:20,831 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:20,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:21,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:21,042 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:11:21,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:21,042 INFO L85 PathProgramCache]: Analyzing trace with hash -570188206, now seen corresponding path program 2 times [2022-11-20 12:11:21,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:21,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870632235] [2022-11-20 12:11:21,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:11:21,043 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:21,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:21,045 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:21,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-20 12:11:21,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:11:21,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:11:21,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:11:21,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:21,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:21,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:21,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:21,266 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-20 12:11:21,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-20 12:11:21,282 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 14 treesize of output 12 [2022-11-20 12:11:21,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:11:21,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:21,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:21,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870632235] [2022-11-20 12:11:21,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870632235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:21,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:21,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:11:21,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889066162] [2022-11-20 12:11:21,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:21,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:21,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:21,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:21,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:21,432 INFO L87 Difference]: Start difference. First operand 240 states and 628 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:21,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:21,511 INFO L93 Difference]: Finished difference Result 243 states and 633 transitions. [2022-11-20 12:11:21,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:21,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 12:11:21,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:21,512 INFO L225 Difference]: With dead ends: 243 [2022-11-20 12:11:21,513 INFO L226 Difference]: Without dead ends: 243 [2022-11-20 12:11:21,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:21,513 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:21,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 23 Unchecked, 0.1s Time] [2022-11-20 12:11:21,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-20 12:11:21,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 240. [2022-11-20 12:11:21,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 237 states have (on average 2.649789029535865) internal successors, (628), 239 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:21,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 628 transitions. [2022-11-20 12:11:21,520 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 628 transitions. Word has length 9 [2022-11-20 12:11:21,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:21,521 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 628 transitions. [2022-11-20 12:11:21,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:21,521 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 628 transitions. [2022-11-20 12:11:21,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 12:11:21,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:21,522 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:21,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -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 12:11:21,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:21,733 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:11:21,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:21,733 INFO L85 PathProgramCache]: Analyzing trace with hash -570190562, now seen corresponding path program 1 times [2022-11-20 12:11:21,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:21,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857047890] [2022-11-20 12:11:21,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:21,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:21,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:21,734 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:21,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-20 12:11:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:21,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:11:21,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:21,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:22,022 INFO L321 Elim1Store]: treesize reduction 65, result has 34.3 percent of original size [2022-11-20 12:11:22,022 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 3 case distinctions, treesize of input 17 treesize of output 41 [2022-11-20 12:11:22,037 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 39 treesize of output 37 [2022-11-20 12:11:22,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:22,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:11:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:23,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:23,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857047890] [2022-11-20 12:11:23,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857047890] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:11:23,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:11:23,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-20 12:11:23,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450184918] [2022-11-20 12:11:23,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:11:23,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:11:23,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:23,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:11:23,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:11:23,267 INFO L87 Difference]: Start difference. First operand 240 states and 628 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:24,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:24,261 INFO L93 Difference]: Finished difference Result 422 states and 1104 transitions. [2022-11-20 12:11:24,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:11:24,262 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 12:11:24,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:24,263 INFO L225 Difference]: With dead ends: 422 [2022-11-20 12:11:24,263 INFO L226 Difference]: Without dead ends: 422 [2022-11-20 12:11:24,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:11:24,264 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 292 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 168 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:24,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 31 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 112 Invalid, 0 Unknown, 168 Unchecked, 0.5s Time] [2022-11-20 12:11:24,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-11-20 12:11:24,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 240. [2022-11-20 12:11:24,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 237 states have (on average 2.649789029535865) internal successors, (628), 239 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:24,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 628 transitions. [2022-11-20 12:11:24,272 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 628 transitions. Word has length 9 [2022-11-20 12:11:24,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:24,272 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 628 transitions. [2022-11-20 12:11:24,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:24,272 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 628 transitions. [2022-11-20 12:11:24,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 12:11:24,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:24,273 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-20 12:11:24,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 12:11:24,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:24,485 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:11:24,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:24,485 INFO L85 PathProgramCache]: Analyzing trace with hash -33594368, now seen corresponding path program 3 times [2022-11-20 12:11:24,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:24,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021205564] [2022-11-20 12:11:24,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:11:24,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:24,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:24,487 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:24,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-20 12:11:24,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-20 12:11:24,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:11:24,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 12:11:24,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:24,842 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:11:24,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:11:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:25,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:11:28,224 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:28,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:28,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021205564] [2022-11-20 12:11:28,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021205564] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:11:28,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:11:28,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-20 12:11:28,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156453366] [2022-11-20 12:11:28,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:11:28,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 12:11:28,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:28,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 12:11:28,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:11:28,226 INFO L87 Difference]: Start difference. First operand 240 states and 628 transitions. Second operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:52,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:52,845 INFO L93 Difference]: Finished difference Result 3434 states and 9504 transitions. [2022-11-20 12:11:52,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 12:11:52,846 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 12:11:52,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:52,853 INFO L225 Difference]: With dead ends: 3434 [2022-11-20 12:11:52,853 INFO L226 Difference]: Without dead ends: 3434 [2022-11-20 12:11:52,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 12:11:52,854 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 3236 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 2797 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3236 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 2819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:52,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3236 Valid, 371 Invalid, 2819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2797 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-11-20 12:11:52,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2022-11-20 12:11:52,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 252. [2022-11-20 12:11:52,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 249 states have (on average 2.6184738955823295) internal successors, (652), 251 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:52,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 652 transitions. [2022-11-20 12:11:52,882 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 652 transitions. Word has length 12 [2022-11-20 12:11:52,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:52,883 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 652 transitions. [2022-11-20 12:11:52,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:52,883 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 652 transitions. [2022-11-20 12:11:52,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 12:11:52,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:52,884 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:52,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:53,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:53,097 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:11:53,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:53,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1004079330, now seen corresponding path program 2 times [2022-11-20 12:11:53,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:53,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302872866] [2022-11-20 12:11:53,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:11:53,098 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:53,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:53,099 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:53,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-20 12:11:53,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:11:53,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:11:53,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:11:53,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:53,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:53,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:53,378 INFO L321 Elim1Store]: treesize reduction 49, result has 33.8 percent of original size [2022-11-20 12:11:53,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 35 [2022-11-20 12:11:53,394 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 42 treesize of output 38 [2022-11-20 12:11:53,603 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 12:11:53,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:53,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:53,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302872866] [2022-11-20 12:11:53,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302872866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:53,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:53,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:11:53,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372289863] [2022-11-20 12:11:53,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:53,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:53,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:53,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:53,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:53,605 INFO L87 Difference]: Start difference. First operand 252 states and 652 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:53,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:53,676 INFO L93 Difference]: Finished difference Result 255 states and 659 transitions. [2022-11-20 12:11:53,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:53,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 12:11:53,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:53,677 INFO L225 Difference]: With dead ends: 255 [2022-11-20 12:11:53,677 INFO L226 Difference]: Without dead ends: 255 [2022-11-20 12:11:53,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:53,678 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:53,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 23 Unchecked, 0.1s Time] [2022-11-20 12:11:53,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-11-20 12:11:53,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 253. [2022-11-20 12:11:53,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 250 states have (on average 2.616) internal successors, (654), 252 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 654 transitions. [2022-11-20 12:11:53,698 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 654 transitions. Word has length 13 [2022-11-20 12:11:53,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:53,698 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 654 transitions. [2022-11-20 12:11:53,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:53,699 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 654 transitions. [2022-11-20 12:11:53,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 12:11:53,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:53,701 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:53,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -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 12:11:53,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:53,906 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:11:53,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:53,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1061687656, now seen corresponding path program 2 times [2022-11-20 12:11:53,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:53,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251212457] [2022-11-20 12:11:53,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:11:53,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:53,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:53,908 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:53,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-20 12:11:54,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:11:54,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:11:54,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 12:11:54,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:54,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:54,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:54,170 INFO L321 Elim1Store]: treesize reduction 49, result has 38.8 percent of original size [2022-11-20 12:11:54,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 38 [2022-11-20 12:11:54,194 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 14 treesize of output 12 [2022-11-20 12:11:54,571 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 12:11:54,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:54,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:54,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251212457] [2022-11-20 12:11:54,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251212457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:54,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:54,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:11:54,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978187509] [2022-11-20 12:11:54,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:54,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:11:54,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:54,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:11:54,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:11:54,573 INFO L87 Difference]: Start difference. First operand 253 states and 654 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:54,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:54,718 INFO L93 Difference]: Finished difference Result 285 states and 779 transitions. [2022-11-20 12:11:54,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:11:54,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 12:11:54,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:54,720 INFO L225 Difference]: With dead ends: 285 [2022-11-20 12:11:54,720 INFO L226 Difference]: Without dead ends: 285 [2022-11-20 12:11:54,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:11:54,721 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 49 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:54,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 8 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 35 Unchecked, 0.1s Time] [2022-11-20 12:11:54,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-11-20 12:11:54,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 253. [2022-11-20 12:11:54,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 250 states have (on average 2.612) internal successors, (653), 252 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:54,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 653 transitions. [2022-11-20 12:11:54,728 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 653 transitions. Word has length 14 [2022-11-20 12:11:54,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:54,728 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 653 transitions. [2022-11-20 12:11:54,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:54,729 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 653 transitions. [2022-11-20 12:11:54,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 12:11:54,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:54,730 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:54,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 12:11:54,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:54,941 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:11:54,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:54,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1447421906, now seen corresponding path program 1 times [2022-11-20 12:11:54,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:54,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518103036] [2022-11-20 12:11:54,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:54,942 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:54,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:54,944 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:11:54,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-20 12:11:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:55,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 12:11:55,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:55,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:11:55,314 INFO L321 Elim1Store]: treesize reduction 65, result has 34.3 percent of original size [2022-11-20 12:11:55,314 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 3 case distinctions, treesize of input 17 treesize of output 41 [2022-11-20 12:11:55,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-11-20 12:11:56,361 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:11:56,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:11:57,971 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:11:57,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:57,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518103036] [2022-11-20 12:11:57,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518103036] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:11:57,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:11:57,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2022-11-20 12:11:57,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781536740] [2022-11-20 12:11:57,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:11:57,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:11:57,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:57,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:11:57,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:11:57,973 INFO L87 Difference]: Start difference. First operand 253 states and 653 transitions. Second operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:02,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:02,249 INFO L93 Difference]: Finished difference Result 440 states and 1138 transitions. [2022-11-20 12:12:02,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:12:02,250 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 12:12:02,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:02,251 INFO L225 Difference]: With dead ends: 440 [2022-11-20 12:12:02,251 INFO L226 Difference]: Without dead ends: 440 [2022-11-20 12:12:02,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=301, Invalid=691, Unknown=0, NotChecked=0, Total=992 [2022-11-20 12:12:02,252 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 210 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:02,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 82 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 235 Invalid, 0 Unknown, 160 Unchecked, 0.9s Time] [2022-11-20 12:12:02,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-20 12:12:02,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 253. [2022-11-20 12:12:02,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 250 states have (on average 2.612) internal successors, (653), 252 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:02,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 653 transitions. [2022-11-20 12:12:02,260 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 653 transitions. Word has length 15 [2022-11-20 12:12:02,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:02,261 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 653 transitions. [2022-11-20 12:12:02,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:02,261 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 653 transitions. [2022-11-20 12:12:02,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 12:12:02,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:02,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:02,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:02,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:02,476 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:12:02,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:02,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1794006570, now seen corresponding path program 1 times [2022-11-20 12:12:02,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:02,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517484205] [2022-11-20 12:12:02,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:02,476 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:02,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:02,477 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:12:02,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-20 12:12:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:02,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:12:02,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:02,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:12:02,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:12:02,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:02,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517484205] [2022-11-20 12:12:02,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517484205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:02,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:02,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:12:02,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545020212] [2022-11-20 12:12:02,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:02,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:12:02,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:02,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:12:02,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:12:02,648 INFO L87 Difference]: Start difference. First operand 253 states and 653 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:02,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:02,922 INFO L93 Difference]: Finished difference Result 263 states and 640 transitions. [2022-11-20 12:12:02,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:12:02,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 12:12:02,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:02,925 INFO L225 Difference]: With dead ends: 263 [2022-11-20 12:12:02,925 INFO L226 Difference]: Without dead ends: 241 [2022-11-20 12:12:02,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:12:02,925 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 24 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:02,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 8 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:12:02,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-20 12:12:02,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 221. [2022-11-20 12:12:02,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 218 states have (on average 2.4862385321100917) internal successors, (542), 220 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:02,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 542 transitions. [2022-11-20 12:12:02,932 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 542 transitions. Word has length 19 [2022-11-20 12:12:02,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:02,932 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 542 transitions. [2022-11-20 12:12:02,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:02,933 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 542 transitions. [2022-11-20 12:12:02,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 12:12:02,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:02,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:02,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:03,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:03,134 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:12:03,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:03,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1775315484, now seen corresponding path program 2 times [2022-11-20 12:12:03,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:03,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707097618] [2022-11-20 12:12:03,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:12:03,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:03,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:03,136 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:12:03,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-20 12:12:03,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:12:03,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:12:03,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:12:03,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:12:03,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:12:03,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:03,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707097618] [2022-11-20 12:12:03,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707097618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:03,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:03,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:12:03,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288705566] [2022-11-20 12:12:03,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:03,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:12:03,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:03,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:12:03,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:12:03,375 INFO L87 Difference]: Start difference. First operand 221 states and 542 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:03,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:03,769 INFO L93 Difference]: Finished difference Result 333 states and 836 transitions. [2022-11-20 12:12:03,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:12:03,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 12:12:03,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:03,771 INFO L225 Difference]: With dead ends: 333 [2022-11-20 12:12:03,771 INFO L226 Difference]: Without dead ends: 226 [2022-11-20 12:12:03,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:12:03,771 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 77 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:03,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 4 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:12:03,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-20 12:12:03,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 206. [2022-11-20 12:12:03,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 203 states have (on average 2.586206896551724) internal successors, (525), 205 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:03,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 525 transitions. [2022-11-20 12:12:03,777 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 525 transitions. Word has length 19 [2022-11-20 12:12:03,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:03,778 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 525 transitions. [2022-11-20 12:12:03,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:03,778 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 525 transitions. [2022-11-20 12:12:03,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 12:12:03,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:03,779 INFO L195 NwaCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:03,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:03,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:03,991 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:12:03,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:03,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1537780690, now seen corresponding path program 2 times [2022-11-20 12:12:03,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:03,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314465140] [2022-11-20 12:12:03,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:12:03,992 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:03,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:03,994 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:12:04,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-20 12:12:04,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:12:04,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:12:04,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:12:04,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:04,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:12:04,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:12:04,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:12:04,251 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-20 12:12:04,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-20 12:12:04,266 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 14 treesize of output 12 [2022-11-20 12:12:04,632 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-20 12:12:04,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:12:04,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:04,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314465140] [2022-11-20 12:12:04,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314465140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:04,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:04,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:12:04,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36054186] [2022-11-20 12:12:04,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:04,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:12:04,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:04,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:12:04,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:12:04,635 INFO L87 Difference]: Start difference. First operand 206 states and 525 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:04,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:04,698 INFO L93 Difference]: Finished difference Result 203 states and 520 transitions. [2022-11-20 12:12:04,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:12:04,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-20 12:12:04,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:04,700 INFO L225 Difference]: With dead ends: 203 [2022-11-20 12:12:04,700 INFO L226 Difference]: Without dead ends: 203 [2022-11-20 12:12:04,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:12:04,700 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:04,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 22 Unchecked, 0.1s Time] [2022-11-20 12:12:04,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-20 12:12:04,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 196. [2022-11-20 12:12:04,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 194 states have (on average 2.6082474226804124) internal successors, (506), 195 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 506 transitions. [2022-11-20 12:12:04,706 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 506 transitions. Word has length 23 [2022-11-20 12:12:04,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:04,706 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 506 transitions. [2022-11-20 12:12:04,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:04,706 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 506 transitions. [2022-11-20 12:12:04,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 12:12:04,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:04,707 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] [2022-11-20 12:12:04,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:04,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:04,914 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:12:04,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:04,915 INFO L85 PathProgramCache]: Analyzing trace with hash -917568169, now seen corresponding path program 1 times [2022-11-20 12:12:04,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:04,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234448652] [2022-11-20 12:12:04,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:04,915 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:04,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:04,918 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:12:04,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-20 12:12:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:05,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:12:05,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:05,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:12:05,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:12:05,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:05,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234448652] [2022-11-20 12:12:05,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234448652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:05,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:05,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:12:05,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615334490] [2022-11-20 12:12:05,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:05,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:12:05,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:05,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:12:05,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:12:05,118 INFO L87 Difference]: Start difference. First operand 196 states and 506 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:05,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:05,280 INFO L93 Difference]: Finished difference Result 204 states and 499 transitions. [2022-11-20 12:12:05,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:12:05,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-20 12:12:05,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:05,281 INFO L225 Difference]: With dead ends: 204 [2022-11-20 12:12:05,281 INFO L226 Difference]: Without dead ends: 190 [2022-11-20 12:12:05,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:12:05,282 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:05,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 5 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:12:05,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-20 12:12:05,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-11-20 12:12:05,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 188 states have (on average 2.50531914893617) internal successors, (471), 189 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:05,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 471 transitions. [2022-11-20 12:12:05,287 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 471 transitions. Word has length 23 [2022-11-20 12:12:05,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:05,288 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 471 transitions. [2022-11-20 12:12:05,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:05,288 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 471 transitions. [2022-11-20 12:12:05,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 12:12:05,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:05,289 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1] [2022-11-20 12:12:05,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:05,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:05,490 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:12:05,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:05,491 INFO L85 PathProgramCache]: Analyzing trace with hash 343834112, now seen corresponding path program 4 times [2022-11-20 12:12:05,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:05,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77564318] [2022-11-20 12:12:05,491 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:12:05,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:05,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:05,492 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:12:05,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-20 12:12:05,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:12:05,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:12:05,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-20 12:12:05,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:05,874 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-20 12:12:05,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-20 12:12:07,464 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:12:07,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:12:19,693 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:12:19,693 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:19,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77564318] [2022-11-20 12:12:19,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77564318] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:12:19,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:12:19,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 46 [2022-11-20 12:12:19,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961728850] [2022-11-20 12:12:19,695 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:12:19,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-20 12:12:19,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:19,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-20 12:12:19,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2022-11-20 12:12:19,697 INFO L87 Difference]: Start difference. First operand 190 states and 471 transitions. Second operand has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:41,855 WARN L233 SmtUtils]: Spent 11.49s on a formula simplification that was a NOOP. DAG size: 254 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:12:54,501 WARN L233 SmtUtils]: Spent 10.78s on a formula simplification that was a NOOP. DAG size: 243 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:13:03,968 WARN L233 SmtUtils]: Spent 7.62s on a formula simplification that was a NOOP. DAG size: 232 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:13:19,744 WARN L233 SmtUtils]: Spent 13.82s on a formula simplification that was a NOOP. DAG size: 222 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:13:29,984 WARN L233 SmtUtils]: Spent 8.22s on a formula simplification that was a NOOP. DAG size: 211 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:13:44,886 WARN L233 SmtUtils]: Spent 12.92s on a formula simplification that was a NOOP. DAG size: 200 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:13:55,562 WARN L233 SmtUtils]: Spent 8.73s on a formula simplification that was a NOOP. DAG size: 189 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:14:05,549 WARN L233 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:14:13,006 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:15:07,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:07,121 INFO L93 Difference]: Finished difference Result 7474 states and 19175 transitions. [2022-11-20 12:15:07,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-20 12:15:07,122 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 12:15:07,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:07,148 INFO L225 Difference]: With dead ends: 7474 [2022-11-20 12:15:07,148 INFO L226 Difference]: Without dead ends: 7474 [2022-11-20 12:15:07,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 142.8s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2022-11-20 12:15:07,150 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 9591 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 11162 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9591 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 11208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 11162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:07,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9591 Valid, 1584 Invalid, 11208 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 11162 Invalid, 0 Unknown, 0 Unchecked, 36.3s Time] [2022-11-20 12:15:07,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7474 states. [2022-11-20 12:15:07,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7474 to 214. [2022-11-20 12:15:07,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 212 states have (on average 2.44811320754717) internal successors, (519), 213 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:07,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 519 transitions. [2022-11-20 12:15:07,212 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 519 transitions. Word has length 24 [2022-11-20 12:15:07,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:07,212 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 519 transitions. [2022-11-20 12:15:07,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:07,213 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 519 transitions. [2022-11-20 12:15:07,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:15:07,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:07,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:07,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:07,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:15:07,427 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:15:07,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:07,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1195296655, now seen corresponding path program 1 times [2022-11-20 12:15:07,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:15:07,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974296387] [2022-11-20 12:15:07,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:07,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:15:07,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:15:07,430 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:15:07,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-20 12:15:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:07,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:15:07,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:07,905 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:15:07,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:15:08,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:15:08,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:15:08,569 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:15:08,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 70 [2022-11-20 12:15:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:15:12,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:15:12,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974296387] [2022-11-20 12:15:12,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974296387] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:15:12,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:15:12,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 12:15:12,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970594786] [2022-11-20 12:15:12,641 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:15:12,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:15:12,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:15:12,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:15:12,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:15:12,642 INFO L87 Difference]: Start difference. First operand 214 states and 519 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:15,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:15,583 INFO L93 Difference]: Finished difference Result 431 states and 1115 transitions. [2022-11-20 12:15:15,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:15:15,585 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:15:15,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:15,586 INFO L225 Difference]: With dead ends: 431 [2022-11-20 12:15:15,586 INFO L226 Difference]: Without dead ends: 431 [2022-11-20 12:15:15,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=262, Invalid=998, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 12:15:15,587 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 178 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 404 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:15,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 12 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 553 Invalid, 0 Unknown, 404 Unchecked, 2.1s Time] [2022-11-20 12:15:15,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-11-20 12:15:15,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 281. [2022-11-20 12:15:15,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 279 states have (on average 2.5376344086021505) internal successors, (708), 280 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:15,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 708 transitions. [2022-11-20 12:15:15,594 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 708 transitions. Word has length 25 [2022-11-20 12:15:15,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:15,594 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 708 transitions. [2022-11-20 12:15:15,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:15,595 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 708 transitions. [2022-11-20 12:15:15,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:15:15,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:15,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:15,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:15,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:15:15,808 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:15:15,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:15,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1772379855, now seen corresponding path program 2 times [2022-11-20 12:15:15,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:15:15,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135309595] [2022-11-20 12:15:15,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:15:15,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:15:15,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:15:15,810 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:15:15,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-20 12:15:16,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:15:16,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:15:16,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:15:16,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:16,259 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:15:16,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:15:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:15:16,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:15:16,898 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:15:16,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 70 [2022-11-20 12:15:22,957 WARN L233 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 91 DAG size of output: 32 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:15:24,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:15:24,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:15:24,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135309595] [2022-11-20 12:15:24,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135309595] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:15:24,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:15:24,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 12:15:24,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580110679] [2022-11-20 12:15:24,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:15:24,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:15:24,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:15:24,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:15:24,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:15:24,556 INFO L87 Difference]: Start difference. First operand 281 states and 708 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:26,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:26,924 INFO L93 Difference]: Finished difference Result 472 states and 1215 transitions. [2022-11-20 12:15:26,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 12:15:26,926 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:15:26,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:26,928 INFO L225 Difference]: With dead ends: 472 [2022-11-20 12:15:26,928 INFO L226 Difference]: Without dead ends: 472 [2022-11-20 12:15:26,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=240, Invalid=882, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 12:15:26,929 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 203 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 274 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:26,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 9 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 351 Invalid, 0 Unknown, 274 Unchecked, 1.6s Time] [2022-11-20 12:15:26,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-11-20 12:15:26,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 348. [2022-11-20 12:15:26,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 346 states have (on average 2.554913294797688) internal successors, (884), 347 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:26,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 884 transitions. [2022-11-20 12:15:26,940 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 884 transitions. Word has length 25 [2022-11-20 12:15:26,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:26,941 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 884 transitions. [2022-11-20 12:15:26,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:26,941 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 884 transitions. [2022-11-20 12:15:26,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:15:26,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:26,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:26,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-20 12:15:27,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:15:27,156 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:15:27,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:27,156 INFO L85 PathProgramCache]: Analyzing trace with hash -825744785, now seen corresponding path program 3 times [2022-11-20 12:15:27,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:15:27,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555174570] [2022-11-20 12:15:27,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:15:27,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:15:27,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:15:27,158 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:15:27,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-20 12:15:27,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:15:27,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:15:27,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:15:27,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:27,677 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:15:27,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:15:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:15:27,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:15:28,372 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:15:28,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 70 [2022-11-20 12:15:36,914 WARN L233 SmtUtils]: Spent 7.92s on a formula simplification. DAG size of input: 92 DAG size of output: 31 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:15:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:15:38,504 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:15:38,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555174570] [2022-11-20 12:15:38,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555174570] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:15:38,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:15:38,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 12:15:38,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191786189] [2022-11-20 12:15:38,505 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:15:38,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:15:38,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:15:38,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:15:38,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:15:38,506 INFO L87 Difference]: Start difference. First operand 348 states and 884 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:41,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:41,391 INFO L93 Difference]: Finished difference Result 506 states and 1291 transitions. [2022-11-20 12:15:41,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 12:15:41,393 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:15:41,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:41,394 INFO L225 Difference]: With dead ends: 506 [2022-11-20 12:15:41,394 INFO L226 Difference]: Without dead ends: 506 [2022-11-20 12:15:41,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=240, Invalid=882, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 12:15:41,395 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 165 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 286 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:41,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 9 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 523 Invalid, 0 Unknown, 286 Unchecked, 2.1s Time] [2022-11-20 12:15:41,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2022-11-20 12:15:41,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 365. [2022-11-20 12:15:41,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 363 states have (on average 2.5482093663911844) internal successors, (925), 364 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:41,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 925 transitions. [2022-11-20 12:15:41,403 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 925 transitions. Word has length 25 [2022-11-20 12:15:41,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:41,404 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 925 transitions. [2022-11-20 12:15:41,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:41,404 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 925 transitions. [2022-11-20 12:15:41,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:15:41,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:41,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:41,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:41,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:15:41,618 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:15:41,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:41,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1068332259, now seen corresponding path program 4 times [2022-11-20 12:15:41,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:15:41,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995671884] [2022-11-20 12:15:41,619 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:15:41,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:15:41,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:15:41,620 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:15:41,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-20 12:15:41,785 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:15:41,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:15:41,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:15:41,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:42,079 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:15:42,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:15:42,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:15:42,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:15:42,812 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:15:42,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 70 [2022-11-20 12:15:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:15:48,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:15:48,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995671884] [2022-11-20 12:15:48,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995671884] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:15:48,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:15:48,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 12:15:48,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956819167] [2022-11-20 12:15:48,583 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:15:48,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:15:48,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:15:48,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:15:48,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:15:48,584 INFO L87 Difference]: Start difference. First operand 365 states and 925 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:51,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:51,117 INFO L93 Difference]: Finished difference Result 487 states and 1250 transitions. [2022-11-20 12:15:51,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 12:15:51,119 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:15:51,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:51,120 INFO L225 Difference]: With dead ends: 487 [2022-11-20 12:15:51,120 INFO L226 Difference]: Without dead ends: 487 [2022-11-20 12:15:51,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=240, Invalid=882, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 12:15:51,121 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 193 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 304 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:51,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 8 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 412 Invalid, 0 Unknown, 304 Unchecked, 1.7s Time] [2022-11-20 12:15:51,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-11-20 12:15:51,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 362. [2022-11-20 12:15:51,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 360 states have (on average 2.5527777777777776) internal successors, (919), 361 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:51,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 919 transitions. [2022-11-20 12:15:51,133 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 919 transitions. Word has length 25 [2022-11-20 12:15:51,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:51,133 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 919 transitions. [2022-11-20 12:15:51,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:51,133 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 919 transitions. [2022-11-20 12:15:51,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:15:51,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:51,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:51,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:51,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:15:51,349 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:15:51,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:51,349 INFO L85 PathProgramCache]: Analyzing trace with hash -962223529, now seen corresponding path program 5 times [2022-11-20 12:15:51,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:15:51,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853238115] [2022-11-20 12:15:51,350 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:15:51,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:15:51,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:15:51,351 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:15:51,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-20 12:15:51,588 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:15:51,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:15:51,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-20 12:15:51,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:52,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:15:52,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:52,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:52,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:52,245 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:15:52,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:52,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:15:52,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:52,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:15:52,272 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:15:52,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 79 treesize of output 31 [2022-11-20 12:15:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:52,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:15:53,471 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:15:53,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 70 [2022-11-20 12:16:03,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:03,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:16:03,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853238115] [2022-11-20 12:16:03,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853238115] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:16:03,071 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:16:03,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-11-20 12:16:03,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510665008] [2022-11-20 12:16:03,071 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:16:03,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 12:16:03,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:16:03,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 12:16:03,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:16:03,072 INFO L87 Difference]: Start difference. First operand 362 states and 919 transitions. Second operand has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:13,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:13,637 INFO L93 Difference]: Finished difference Result 999 states and 2724 transitions. [2022-11-20 12:16:13,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-20 12:16:13,638 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:16:13,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:13,640 INFO L225 Difference]: With dead ends: 999 [2022-11-20 12:16:13,640 INFO L226 Difference]: Without dead ends: 999 [2022-11-20 12:16:13,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=910, Invalid=2630, Unknown=0, NotChecked=0, Total=3540 [2022-11-20 12:16:13,641 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 203 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1236 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:13,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 4 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 431 Invalid, 0 Unknown, 1236 Unchecked, 1.4s Time] [2022-11-20 12:16:13,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-11-20 12:16:13,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 534. [2022-11-20 12:16:13,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 532 states have (on average 2.755639097744361) internal successors, (1466), 533 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:13,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 1466 transitions. [2022-11-20 12:16:13,656 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 1466 transitions. Word has length 25 [2022-11-20 12:16:13,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:13,657 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 1466 transitions. [2022-11-20 12:16:13,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:13,657 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 1466 transitions. [2022-11-20 12:16:13,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:16:13,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:13,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:13,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:13,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:16:13,866 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:16:13,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:13,867 INFO L85 PathProgramCache]: Analyzing trace with hash -198745777, now seen corresponding path program 6 times [2022-11-20 12:16:13,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:16:13,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160601266] [2022-11-20 12:16:13,867 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 12:16:13,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:16:13,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:16:13,868 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:16:13,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-20 12:16:14,069 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-20 12:16:14,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:16:14,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:16:14,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:14,431 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:16:14,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:16:14,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:16:14,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:16:15,292 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:16:15,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 70 [2022-11-20 12:16:21,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:16:21,240 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:16:21,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160601266] [2022-11-20 12:16:21,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160601266] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:16:21,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:16:21,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 12:16:21,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608307544] [2022-11-20 12:16:21,241 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:16:21,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:16:21,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:16:21,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:16:21,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:16:21,242 INFO L87 Difference]: Start difference. First operand 534 states and 1466 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:23,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:23,723 INFO L93 Difference]: Finished difference Result 693 states and 1918 transitions. [2022-11-20 12:16:23,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 12:16:23,724 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:16:23,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:23,726 INFO L225 Difference]: With dead ends: 693 [2022-11-20 12:16:23,726 INFO L226 Difference]: Without dead ends: 693 [2022-11-20 12:16:23,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=240, Invalid=882, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 12:16:23,728 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 190 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 294 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:23,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 11 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 400 Invalid, 0 Unknown, 294 Unchecked, 1.7s Time] [2022-11-20 12:16:23,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-11-20 12:16:23,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 525. [2022-11-20 12:16:23,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 523 states have (on average 2.7934990439770555) internal successors, (1461), 524 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:23,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 1461 transitions. [2022-11-20 12:16:23,742 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 1461 transitions. Word has length 25 [2022-11-20 12:16:23,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:23,743 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 1461 transitions. [2022-11-20 12:16:23,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:23,743 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 1461 transitions. [2022-11-20 12:16:23,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:16:23,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:23,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:23,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:23,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:16:23,958 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:16:23,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:23,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1919589987, now seen corresponding path program 7 times [2022-11-20 12:16:23,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:16:23,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497556982] [2022-11-20 12:16:23,959 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 12:16:23,959 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:16:23,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:16:23,960 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:16:23,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-20 12:16:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:24,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:16:24,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:24,432 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:16:24,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:16:24,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:16:24,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:16:25,215 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:16:25,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 70 [2022-11-20 12:16:32,469 WARN L233 SmtUtils]: Spent 6.57s on a formula simplification. DAG size of input: 97 DAG size of output: 32 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:16:34,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:16:34,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:16:34,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497556982] [2022-11-20 12:16:34,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497556982] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:16:34,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:16:34,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 12:16:34,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125579518] [2022-11-20 12:16:34,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:16:34,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:16:34,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:16:34,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:16:34,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:16:34,466 INFO L87 Difference]: Start difference. First operand 525 states and 1461 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:36,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:36,320 INFO L93 Difference]: Finished difference Result 682 states and 1879 transitions. [2022-11-20 12:16:36,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:16:36,321 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:16:36,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:36,323 INFO L225 Difference]: With dead ends: 682 [2022-11-20 12:16:36,323 INFO L226 Difference]: Without dead ends: 682 [2022-11-20 12:16:36,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=222, Invalid=834, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 12:16:36,324 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 148 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 256 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:36,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 10 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 243 Invalid, 0 Unknown, 256 Unchecked, 1.2s Time] [2022-11-20 12:16:36,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-11-20 12:16:36,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 536. [2022-11-20 12:16:36,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 534 states have (on average 2.803370786516854) internal successors, (1497), 535 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:36,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1497 transitions. [2022-11-20 12:16:36,335 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1497 transitions. Word has length 25 [2022-11-20 12:16:36,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:36,335 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 1497 transitions. [2022-11-20 12:16:36,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:36,335 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1497 transitions. [2022-11-20 12:16:36,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:16:36,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:36,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:36,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-11-20 12:16:36,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:16:36,550 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:16:36,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:36,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1798294109, now seen corresponding path program 8 times [2022-11-20 12:16:36,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:16:36,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292105676] [2022-11-20 12:16:36,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:16:36,551 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:16:36,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:16:36,556 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:16:36,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-20 12:16:36,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:16:36,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:16:36,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:16:36,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:37,139 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:16:37,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:16:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:16:37,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:16:37,874 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:16:37,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 70 [2022-11-20 12:16:44,233 WARN L233 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 100 DAG size of output: 32 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:16:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:16:45,779 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:16:45,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292105676] [2022-11-20 12:16:45,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292105676] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:16:45,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:16:45,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 12:16:45,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861413517] [2022-11-20 12:16:45,780 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:16:45,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:16:45,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:16:45,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:16:45,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:16:45,782 INFO L87 Difference]: Start difference. First operand 536 states and 1497 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:48,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:48,739 INFO L93 Difference]: Finished difference Result 693 states and 1942 transitions. [2022-11-20 12:16:48,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 12:16:48,740 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:16:48,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:48,742 INFO L225 Difference]: With dead ends: 693 [2022-11-20 12:16:48,742 INFO L226 Difference]: Without dead ends: 693 [2022-11-20 12:16:48,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=240, Invalid=882, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 12:16:48,743 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 177 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 418 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:48,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 9 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 422 Invalid, 0 Unknown, 418 Unchecked, 2.0s Time] [2022-11-20 12:16:48,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-11-20 12:16:48,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 523. [2022-11-20 12:16:48,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 521 states have (on average 2.836852207293666) internal successors, (1478), 522 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:48,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 1478 transitions. [2022-11-20 12:16:48,759 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 1478 transitions. Word has length 25 [2022-11-20 12:16:48,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:48,760 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 1478 transitions. [2022-11-20 12:16:48,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:48,760 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 1478 transitions. [2022-11-20 12:16:48,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:16:48,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:48,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:48,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:48,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:16:48,976 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:16:48,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:48,977 INFO L85 PathProgramCache]: Analyzing trace with hash -779828189, now seen corresponding path program 9 times [2022-11-20 12:16:48,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:16:48,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296072220] [2022-11-20 12:16:48,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:16:48,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:16:48,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:16:48,978 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:16:48,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-20 12:16:49,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:16:49,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:16:49,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:16:49,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:49,504 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:16:49,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:16:49,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:16:49,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:16:50,412 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:16:50,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 70 [2022-11-20 12:16:57,250 WARN L233 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 100 DAG size of output: 32 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:16:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:16:59,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:16:59,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296072220] [2022-11-20 12:16:59,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296072220] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:16:59,033 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:16:59,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 12:16:59,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685487714] [2022-11-20 12:16:59,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:16:59,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:16:59,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:16:59,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:16:59,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:16:59,034 INFO L87 Difference]: Start difference. First operand 523 states and 1478 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:17:01,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:01,761 INFO L93 Difference]: Finished difference Result 640 states and 1805 transitions. [2022-11-20 12:17:01,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 12:17:01,762 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:17:01,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:01,763 INFO L225 Difference]: With dead ends: 640 [2022-11-20 12:17:01,763 INFO L226 Difference]: Without dead ends: 640 [2022-11-20 12:17:01,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=240, Invalid=882, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 12:17:01,765 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 241 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:01,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 8 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 381 Invalid, 0 Unknown, 231 Unchecked, 1.9s Time] [2022-11-20 12:17:01,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2022-11-20 12:17:01,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 389. [2022-11-20 12:17:01,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 387 states have (on average 2.731266149870801) internal successors, (1057), 388 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:17:01,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1057 transitions. [2022-11-20 12:17:01,777 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1057 transitions. Word has length 25 [2022-11-20 12:17:01,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:01,777 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 1057 transitions. [2022-11-20 12:17:01,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:17:01,778 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1057 transitions. [2022-11-20 12:17:01,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:17:01,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:01,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:17:01,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-20 12:17:01,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:17:01,994 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:17:01,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:01,994 INFO L85 PathProgramCache]: Analyzing trace with hash 2108470383, now seen corresponding path program 10 times [2022-11-20 12:17:01,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:17:01,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765105395] [2022-11-20 12:17:01,995 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:17:01,995 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:17:01,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:17:01,996 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:17:01,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-20 12:17:02,190 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:17:02,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:17:02,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:17:02,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:02,503 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:17:02,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:17:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:17:02,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:17:03,381 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:17:03,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 70 [2022-11-20 12:17:14,837 WARN L233 SmtUtils]: Spent 10.69s on a formula simplification. DAG size of input: 97 DAG size of output: 32 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:17:16,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:17:16,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:17:16,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765105395] [2022-11-20 12:17:16,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765105395] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:17:16,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:17:16,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 12:17:16,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534929453] [2022-11-20 12:17:16,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:17:16,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:17:16,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:17:16,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:17:16,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:17:16,667 INFO L87 Difference]: Start difference. First operand 389 states and 1057 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:17:19,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:19,088 INFO L93 Difference]: Finished difference Result 550 states and 1506 transitions. [2022-11-20 12:17:19,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 12:17:19,089 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:17:19,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:19,090 INFO L225 Difference]: With dead ends: 550 [2022-11-20 12:17:19,090 INFO L226 Difference]: Without dead ends: 550 [2022-11-20 12:17:19,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=240, Invalid=882, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 12:17:19,091 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 179 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 293 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:19,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 10 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 301 Invalid, 0 Unknown, 293 Unchecked, 1.5s Time] [2022-11-20 12:17:19,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-11-20 12:17:19,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 377. [2022-11-20 12:17:19,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 375 states have (on average 2.7093333333333334) internal successors, (1016), 376 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:17:19,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1016 transitions. [2022-11-20 12:17:19,101 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1016 transitions. Word has length 25 [2022-11-20 12:17:19,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:19,102 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 1016 transitions. [2022-11-20 12:17:19,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:17:19,102 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1016 transitions. [2022-11-20 12:17:19,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:17:19,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:19,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:17:19,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Ended with exit code 0 [2022-11-20 12:17:19,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:17:19,318 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:17:19,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:19,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2073237569, now seen corresponding path program 11 times [2022-11-20 12:17:19,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:17:19,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090209348] [2022-11-20 12:17:19,319 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:17:19,319 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:17:19,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:17:19,320 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:17:19,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-20 12:17:19,566 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:17:19,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:17:19,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 12:17:19,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:20,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:17:20,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:17:20,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:17:20,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:17:20,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:17:20,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:17:20,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:17:20,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:17:20,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:17:20,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:17:20,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:17:20,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:17:20,339 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:17:20,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 79 treesize of output 31 [2022-11-20 12:17:20,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:17:20,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:17:21,831 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:17:21,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 70 [2022-11-20 12:17:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:17:31,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:17:31,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090209348] [2022-11-20 12:17:31,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090209348] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:17:31,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:17:31,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-11-20 12:17:31,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624771806] [2022-11-20 12:17:31,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:17:31,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 12:17:31,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:17:31,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 12:17:31,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:17:31,353 INFO L87 Difference]: Start difference. First operand 377 states and 1016 transitions. Second operand has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:18:06,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:18:06,036 INFO L93 Difference]: Finished difference Result 832 states and 2344 transitions. [2022-11-20 12:18:06,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-20 12:18:06,037 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:18:06,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:18:06,039 INFO L225 Difference]: With dead ends: 832 [2022-11-20 12:18:06,039 INFO L226 Difference]: Without dead ends: 832 [2022-11-20 12:18:06,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 41.8s TimeCoverageRelationStatistics Valid=872, Invalid=3033, Unknown=1, NotChecked=0, Total=3906 [2022-11-20 12:18:06,041 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 244 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 730 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:18:06,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 5 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 302 Invalid, 0 Unknown, 730 Unchecked, 1.1s Time] [2022-11-20 12:18:06,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2022-11-20 12:18:06,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 442. [2022-11-20 12:18:06,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 440 states have (on average 2.8136363636363635) internal successors, (1238), 441 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:18:06,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1238 transitions. [2022-11-20 12:18:06,052 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1238 transitions. Word has length 25 [2022-11-20 12:18:06,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:18:06,052 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 1238 transitions. [2022-11-20 12:18:06,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:18:06,052 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1238 transitions. [2022-11-20 12:18:06,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:18:06,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:18:06,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:18:06,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-11-20 12:18:06,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:18:06,263 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:18:06,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:06,263 INFO L85 PathProgramCache]: Analyzing trace with hash -594164215, now seen corresponding path program 12 times [2022-11-20 12:18:06,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:18:06,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677454258] [2022-11-20 12:18:06,263 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 12:18:06,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:18:06,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:18:06,265 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:18:06,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-20 12:18:06,474 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-20 12:18:06,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:18:06,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:18:06,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:18:06,765 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:18:06,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:18:07,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:18:07,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:18:07,620 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:18:07,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 70 [2022-11-20 12:18:14,360 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 100 DAG size of output: 32 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:18:16,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:18:16,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:18:16,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677454258] [2022-11-20 12:18:16,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677454258] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:18:16,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:18:16,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 12:18:16,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341111967] [2022-11-20 12:18:16,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:18:16,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:18:16,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:18:16,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:18:16,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:18:16,275 INFO L87 Difference]: Start difference. First operand 442 states and 1238 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:18:18,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:18:18,992 INFO L93 Difference]: Finished difference Result 590 states and 1641 transitions. [2022-11-20 12:18:18,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 12:18:18,993 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:18:18,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:18:18,994 INFO L225 Difference]: With dead ends: 590 [2022-11-20 12:18:18,994 INFO L226 Difference]: Without dead ends: 590 [2022-11-20 12:18:18,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=240, Invalid=882, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 12:18:18,995 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 198 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 318 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:18:18,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 9 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 312 Invalid, 0 Unknown, 318 Unchecked, 1.8s Time] [2022-11-20 12:18:18,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-11-20 12:18:19,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 442. [2022-11-20 12:18:19,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 440 states have (on average 2.8136363636363635) internal successors, (1238), 441 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:18:19,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1238 transitions. [2022-11-20 12:18:19,008 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1238 transitions. Word has length 25 [2022-11-20 12:18:19,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:18:19,008 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 1238 transitions. [2022-11-20 12:18:19,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:18:19,009 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1238 transitions. [2022-11-20 12:18:19,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:18:19,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:18:19,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:18:19,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:19,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:18:19,214 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:18:19,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:19,215 INFO L85 PathProgramCache]: Analyzing trace with hash 889225743, now seen corresponding path program 13 times [2022-11-20 12:18:19,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:18:19,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986814504] [2022-11-20 12:18:19,215 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 12:18:19,215 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:18:19,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:18:19,216 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:18:19,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-20 12:18:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:18:19,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 12:18:19,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:18:19,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 12:18:20,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:18:20,167 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:18:20,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:18:20,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:18:20,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:18:21,894 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:18:21,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 139 treesize of output 117 [2022-11-20 12:18:21,915 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:18:21,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 11 [2022-11-20 12:18:29,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:18:29,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:18:29,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986814504] [2022-11-20 12:18:29,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986814504] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:18:29,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:18:29,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-11-20 12:18:29,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738681847] [2022-11-20 12:18:29,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:18:29,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 12:18:29,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:18:29,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 12:18:29,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=450, Unknown=3, NotChecked=0, Total=552 [2022-11-20 12:18:29,351 INFO L87 Difference]: Start difference. First operand 442 states and 1238 transitions. Second operand has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:18:32,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:18:35,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:18:39,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:18:39,590 INFO L93 Difference]: Finished difference Result 1013 states and 2840 transitions. [2022-11-20 12:18:39,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 12:18:39,592 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:18:39,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:18:39,594 INFO L225 Difference]: With dead ends: 1013 [2022-11-20 12:18:39,595 INFO L226 Difference]: Without dead ends: 1013 [2022-11-20 12:18:39,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=389, Invalid=1588, Unknown=3, NotChecked=0, Total=1980 [2022-11-20 12:18:39,596 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 274 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 23 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 920 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:18:39,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 0 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 482 Invalid, 2 Unknown, 920 Unchecked, 6.9s Time] [2022-11-20 12:18:39,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-11-20 12:18:39,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 481. [2022-11-20 12:18:39,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 479 states have (on average 2.816283924843424) internal successors, (1349), 480 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:18:39,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 1349 transitions. [2022-11-20 12:18:39,613 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 1349 transitions. Word has length 25 [2022-11-20 12:18:39,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:18:39,614 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 1349 transitions. [2022-11-20 12:18:39,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:18:39,614 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 1349 transitions. [2022-11-20 12:18:39,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:18:39,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:18:39,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:18:39,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:39,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:18:39,831 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:18:39,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:39,832 INFO L85 PathProgramCache]: Analyzing trace with hash -523928037, now seen corresponding path program 14 times [2022-11-20 12:18:39,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:18:39,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480270566] [2022-11-20 12:18:39,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:18:39,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:18:39,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:18:39,834 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:18:39,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-20 12:18:40,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:18:40,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:18:40,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 12:18:40,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:18:40,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 12:18:40,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:18:40,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:18:41,053 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:18:41,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:18:41,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:18:41,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:18:44,006 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:18:44,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 482 treesize of output 425 [2022-11-20 12:18:44,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:18:44,036 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:18:44,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:18:44,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:18:44,046 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:18:44,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:18:44,055 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:18:44,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:18:44,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:18:44,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:18:44,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:18:44,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:18:44,195 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:18:44,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 218 treesize of output 185 [2022-11-20 12:18:44,227 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:18:44,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 266 treesize of output 158 [2022-11-20 12:19:44,687 WARN L233 SmtUtils]: Spent 51.17s on a formula simplification. DAG size of input: 291 DAG size of output: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:19:45,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:19:45,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:19:45,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480270566] [2022-11-20 12:19:45,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480270566] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:19:45,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:19:45,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2022-11-20 12:19:45,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150598640] [2022-11-20 12:19:45,988 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:19:45,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 12:19:45,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:19:45,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 12:19:45,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=542, Unknown=3, NotChecked=0, Total=650 [2022-11-20 12:19:45,989 INFO L87 Difference]: Start difference. First operand 481 states and 1349 transitions. Second operand has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 25 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:49,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:19:51,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:19:57,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:19:59,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:20:04,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:20:06,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:20:13,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:20:17,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:20:17,896 INFO L93 Difference]: Finished difference Result 816 states and 2187 transitions. [2022-11-20 12:20:17,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 12:20:17,897 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 25 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:20:17,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:20:17,899 INFO L225 Difference]: With dead ends: 816 [2022-11-20 12:20:17,900 INFO L226 Difference]: Without dead ends: 816 [2022-11-20 12:20:17,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 71.9s TimeCoverageRelationStatistics Valid=880, Invalid=3662, Unknown=14, NotChecked=0, Total=4556 [2022-11-20 12:20:17,901 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 360 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 19 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 984 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:20:17,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 10 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 604 Invalid, 7 Unknown, 984 Unchecked, 17.4s Time] [2022-11-20 12:20:17,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2022-11-20 12:20:17,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 491. [2022-11-20 12:20:17,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 489 states have (on average 2.79959100204499) internal successors, (1369), 490 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:17,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 1369 transitions. [2022-11-20 12:20:17,928 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 1369 transitions. Word has length 25 [2022-11-20 12:20:17,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:20:17,929 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 1369 transitions. [2022-11-20 12:20:17,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 25 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:17,929 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 1369 transitions. [2022-11-20 12:20:17,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:20:17,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:20:17,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:17,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:18,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:20:18,146 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:20:18,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:18,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1556543559, now seen corresponding path program 15 times [2022-11-20 12:20:18,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:20:18,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939792240] [2022-11-20 12:20:18,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:20:18,147 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:20:18,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:20:18,148 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:20:18,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-20 12:20:18,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:20:18,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:20:18,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 12:20:18,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:18,438 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 930 treesize of output 898 [2022-11-20 12:20:18,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:20:19,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:20:19,252 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:20:19,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:20:19,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:20:19,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:20:22,235 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:20:22,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 482 treesize of output 425 [2022-11-20 12:20:22,626 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:20:22,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 377 treesize of output 344 [2022-11-20 12:20:22,660 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:20:22,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 266 treesize of output 158 [2022-11-20 12:21:51,218 WARN L233 SmtUtils]: Spent 59.16s on a formula simplification. DAG size of input: 447 DAG size of output: 57 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:21:52,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:21:52,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:21:52,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939792240] [2022-11-20 12:21:52,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939792240] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:21:52,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:21:52,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2022-11-20 12:21:52,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370343329] [2022-11-20 12:21:52,467 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:21:52,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 12:21:52,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:21:52,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 12:21:52,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=500, Unknown=3, NotChecked=0, Total=600 [2022-11-20 12:21:52,468 INFO L87 Difference]: Start difference. First operand 491 states and 1369 transitions. Second operand has 25 states, 25 states have (on average 1.84) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:55,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:21:57,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:22:01,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:22:03,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:22:10,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:10,514 INFO L93 Difference]: Finished difference Result 897 states and 2395 transitions. [2022-11-20 12:22:10,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 12:22:10,516 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.84) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:22:10,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:10,518 INFO L225 Difference]: With dead ends: 897 [2022-11-20 12:22:10,519 INFO L226 Difference]: Without dead ends: 897 [2022-11-20 12:22:10,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 72.2s TimeCoverageRelationStatistics Valid=599, Invalid=2704, Unknown=3, NotChecked=0, Total=3306 [2022-11-20 12:22:10,520 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 327 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 20 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 1911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 1289 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:10,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 6 Invalid, 1911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 598 Invalid, 4 Unknown, 1289 Unchecked, 11.3s Time] [2022-11-20 12:22:10,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-11-20 12:22:10,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 388. [2022-11-20 12:22:10,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 386 states have (on average 2.7305699481865284) internal successors, (1054), 387 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:10,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1054 transitions. [2022-11-20 12:22:10,535 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1054 transitions. Word has length 25 [2022-11-20 12:22:10,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:10,535 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 1054 transitions. [2022-11-20 12:22:10,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.84) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:10,535 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1054 transitions. [2022-11-20 12:22:10,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:22:10,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:10,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:10,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-11-20 12:22:10,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:22:10,746 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:22:10,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:10,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1114371365, now seen corresponding path program 16 times [2022-11-20 12:22:10,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:22:10,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208158670] [2022-11-20 12:22:10,748 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:22:10,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:22:10,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:22:10,749 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:22:10,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-20 12:22:11,060 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:22:11,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:22:11,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 12:22:11,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:11,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 12:22:11,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:22:11,959 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:22:11,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:22:12,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:22:12,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:22:14,044 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:22:14,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 139 treesize of output 117 [2022-11-20 12:22:14,066 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:22:14,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 11 [2022-11-20 12:22:20,658 WARN L233 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 123 DAG size of output: 48 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:22:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:22:27,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:22:27,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208158670] [2022-11-20 12:22:27,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208158670] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:22:27,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:22:27,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-11-20 12:22:27,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217436240] [2022-11-20 12:22:27,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:22:27,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 12:22:27,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:22:27,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 12:22:27,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=458, Unknown=2, NotChecked=0, Total=552 [2022-11-20 12:22:27,531 INFO L87 Difference]: Start difference. First operand 388 states and 1054 transitions. Second operand has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:30,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:22:40,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:40,634 INFO L93 Difference]: Finished difference Result 928 states and 2469 transitions. [2022-11-20 12:22:40,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 12:22:40,635 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:22:40,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:40,637 INFO L225 Difference]: With dead ends: 928 [2022-11-20 12:22:40,637 INFO L226 Difference]: Without dead ends: 928 [2022-11-20 12:22:40,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=621, Invalid=2683, Unknown=2, NotChecked=0, Total=3306 [2022-11-20 12:22:40,639 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 208 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 566 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:40,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 6 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 643 Invalid, 1 Unknown, 566 Unchecked, 6.4s Time] [2022-11-20 12:22:40,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2022-11-20 12:22:40,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 403. [2022-11-20 12:22:40,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 401 states have (on average 2.7506234413965087) internal successors, (1103), 402 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:40,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 1103 transitions. [2022-11-20 12:22:40,652 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 1103 transitions. Word has length 25 [2022-11-20 12:22:40,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:40,652 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 1103 transitions. [2022-11-20 12:22:40,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:40,652 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 1103 transitions. [2022-11-20 12:22:40,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:22:40,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:40,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:40,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Ended with exit code 0 [2022-11-20 12:22:40,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:22:40,854 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:22:40,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:40,854 INFO L85 PathProgramCache]: Analyzing trace with hash 134783191, now seen corresponding path program 17 times [2022-11-20 12:22:40,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:22:40,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997693312] [2022-11-20 12:22:40,855 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:22:40,855 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:22:40,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:22:40,856 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:22:40,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-20 12:22:41,201 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:22:41,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:22:41,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-20 12:22:41,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:41,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 12:22:42,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:22:42,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:22:42,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:22:42,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:22:42,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:22:42,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:22:42,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:22:42,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:22:42,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:22:42,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:22:42,291 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:22:42,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 79 treesize of output 31 [2022-11-20 12:22:42,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:42,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:22:43,899 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:22:43,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 139 treesize of output 117 [2022-11-20 12:22:43,932 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:22:43,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 15 [2022-11-20 12:22:58,374 WARN L233 SmtUtils]: Spent 12.10s on a formula simplification. DAG size of input: 122 DAG size of output: 53 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:23:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:23:03,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:23:03,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997693312] [2022-11-20 12:23:03,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997693312] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:23:03,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:23:03,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-11-20 12:23:03,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880065811] [2022-11-20 12:23:03,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:23:03,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 12:23:03,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:23:03,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 12:23:03,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=470, Unknown=5, NotChecked=0, Total=552 [2022-11-20 12:23:03,031 INFO L87 Difference]: Start difference. First operand 403 states and 1103 transitions. Second operand has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:07,575 WARN L837 $PredicateComparison]: unable to prove that (and (= c_~v_assert~0 (_ bv1 8)) (or (let ((.cse1 (bvsle c_~n~0 (_ bv0 32)))) (and (or (forall ((v_arrayElimCell_279 (_ BitVec 8)) (v_arrayElimCell_276 (_ BitVec 8)) (v_arrayElimCell_275 (_ BitVec 8)) (v_arrayElimCell_282 (_ BitVec 8))) (let ((.cse0 (concat (concat (concat v_arrayElimCell_276 v_arrayElimCell_279) v_arrayElimCell_275) v_arrayElimCell_282))) (or (bvsle (bvadd c_~d~0 .cse0) c_~W~0) (not (= .cse0 (_ bv1 32)))))) .cse1) (or (not (= |c_ULTIMATE.start_main_~#t3~0#1.base| c_~queue~0.base)) .cse1) (forall ((~back~0 (_ BitVec 32)) (~front~0 (_ BitVec 32))) (or (not (bvslt ~back~0 c_~n~0)) (not (bvsge ~front~0 (_ bv0 32))) (not (bvsge ~back~0 (_ bv0 32))) (= (bvmul (_ bv4 32) ~back~0) (bvmul (_ bv4 32) ~front~0)) (not (bvslt ~front~0 c_~n~0)))))) (forall ((v_arrayElimCell_285 (_ BitVec 8)) (v_arrayElimCell_284 (_ BitVec 8)) (v_arrayElimCell_286 (_ BitVec 8)) (v_arrayElimCell_283 (_ BitVec 8))) (bvsle (bvadd c_~d~0 (concat (concat (concat v_arrayElimCell_285 v_arrayElimCell_283) v_arrayElimCell_286) v_arrayElimCell_284)) c_~W~0))) (forall ((~front~0 (_ BitVec 32)) (v_ArrVal_1980 (Array (_ BitVec 32) (_ BitVec 8)))) (or (bvsle (bvadd c_~d~0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1980) c_~queue~0.base)) (.cse3 (bvmul (_ bv4 32) ~front~0))) (concat (concat (concat (select .cse2 (bvadd c_~queue~0.offset (_ bv3 32) .cse3)) (select .cse2 (bvadd c_~queue~0.offset (_ bv2 32) .cse3))) (select .cse2 (bvadd c_~queue~0.offset (_ bv1 32) .cse3))) (select .cse2 (bvadd c_~queue~0.offset .cse3))))) c_~W~0) (not (bvsge ~front~0 (_ bv0 32))) (not (bvslt ~front~0 c_~n~0))))) is different from false [2022-11-20 12:23:18,950 WARN L233 SmtUtils]: Spent 6.33s on a formula simplification that was a NOOP. DAG size: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:23:26,122 WARN L233 SmtUtils]: Spent 6.38s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:23:28,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:28,741 INFO L93 Difference]: Finished difference Result 937 states and 2755 transitions. [2022-11-20 12:23:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 12:23:28,742 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:23:28,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:28,744 INFO L225 Difference]: With dead ends: 937 [2022-11-20 12:23:28,744 INFO L226 Difference]: Without dead ends: 937 [2022-11-20 12:23:28,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 41.8s TimeCoverageRelationStatistics Valid=428, Invalid=1548, Unknown=8, NotChecked=86, Total=2070 [2022-11-20 12:23:28,745 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 162 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 922 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:28,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 22 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 420 Invalid, 0 Unknown, 922 Unchecked, 1.7s Time] [2022-11-20 12:23:28,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-11-20 12:23:28,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 623. [2022-11-20 12:23:28,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 621 states have (on average 2.9452495974235107) internal successors, (1829), 622 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:28,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1829 transitions. [2022-11-20 12:23:28,756 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1829 transitions. Word has length 25 [2022-11-20 12:23:28,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:28,757 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 1829 transitions. [2022-11-20 12:23:28,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:28,757 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1829 transitions. [2022-11-20 12:23:28,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:23:28,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:28,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:28,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-20 12:23:28,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:28,962 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-20 12:23:28,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:28,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1070845883, now seen corresponding path program 18 times [2022-11-20 12:23:28,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:23:28,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175305740] [2022-11-20 12:23:28,963 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 12:23:28,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:28,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:23:28,965 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:23:28,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a7c97d-dfee-4665-a13e-4c2c27efb122/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-20 12:23:29,268 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-20 12:23:29,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:23:29,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 12:23:29,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:29,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 144 [2022-11-20 12:23:29,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:23:29,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:23:30,151 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:23:30,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-11-20 12:23:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:23:30,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:23:33,658 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:23:33,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 282 treesize of output 260 [2022-11-20 12:23:33,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 101 [2022-11-20 12:23:34,137 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-20 12:23:34,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 121 treesize of output 115