./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_12-arraycollapse_rc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b 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_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_12-arraycollapse_rc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro --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 034172cc4904075fab6f792587170b7236be9fb41f3a62fa7fbe9a216ec4ca2c --- 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-8393723 [2022-11-18 19:38:26,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:38:26,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:38:26,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:38:26,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:38:26,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:38:26,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:38:26,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:38:26,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:38:26,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:38:26,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:38:26,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:38:26,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:38:26,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:38:26,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:38:26,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:38:26,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:38:26,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:38:26,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:38:26,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:38:26,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:38:26,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:38:26,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:38:26,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:38:26,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:38:26,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:38:26,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:38:26,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:38:26,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:38:26,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:38:26,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:38:26,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:38:26,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:38:26,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:38:26,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:38:26,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:38:26,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:38:26,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:38:26,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:38:26,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:38:26,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:38:26,700 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 19:38:26,738 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:38:26,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:38:26,739 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:38:26,739 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:38:26,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:38:26,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:38:26,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:38:26,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:38:26,741 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:38:26,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:38:26,743 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:38:26,743 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:38:26,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:38:26,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:38:26,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:38:26,744 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:38:26,745 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:38:26,745 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:38:26,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:38:26,745 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:38:26,746 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:38:26,746 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:38:26,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:38:26,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:38:26,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:38:26,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:38:26,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:38:26,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:38:26,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:38:26,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:38:26,750 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_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 034172cc4904075fab6f792587170b7236be9fb41f3a62fa7fbe9a216ec4ca2c [2022-11-18 19:38:27,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:38:27,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:38:27,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:38:27,102 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:38:27,103 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:38:27,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/09-regions_12-arraycollapse_rc.i [2022-11-18 19:38:27,177 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/data/bda3485f3/fb7e75564bd248d49d3596f4f9e6cbcb/FLAGfe8f4b6da [2022-11-18 19:38:27,786 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:38:27,786 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/sv-benchmarks/c/goblint-regression/09-regions_12-arraycollapse_rc.i [2022-11-18 19:38:27,803 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/data/bda3485f3/fb7e75564bd248d49d3596f4f9e6cbcb/FLAGfe8f4b6da [2022-11-18 19:38:28,055 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/data/bda3485f3/fb7e75564bd248d49d3596f4f9e6cbcb [2022-11-18 19:38:28,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:38:28,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:38:28,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:38:28,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:38:28,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:38:28,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:38:28" (1/1) ... [2022-11-18 19:38:28,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c4c0ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:28, skipping insertion in model container [2022-11-18 19:38:28,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:38:28" (1/1) ... [2022-11-18 19:38:28,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:38:28,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:38:28,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:38:28,718 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:38:28,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:38:28,837 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:38:28,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:28 WrapperNode [2022-11-18 19:38:28,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:38:28,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:38:28,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:38:28,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:38:28,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:28" (1/1) ... [2022-11-18 19:38:28,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:28" (1/1) ... [2022-11-18 19:38:28,939 INFO L138 Inliner]: procedures = 370, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 154 [2022-11-18 19:38:28,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:38:28,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:38:28,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:38:28,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:38:28,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:28" (1/1) ... [2022-11-18 19:38:28,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:28" (1/1) ... [2022-11-18 19:38:28,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:28" (1/1) ... [2022-11-18 19:38:28,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:28" (1/1) ... [2022-11-18 19:38:28,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:28" (1/1) ... [2022-11-18 19:38:29,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:28" (1/1) ... [2022-11-18 19:38:29,004 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:28" (1/1) ... [2022-11-18 19:38:29,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:28" (1/1) ... [2022-11-18 19:38:29,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:38:29,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:38:29,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:38:29,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:38:29,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:28" (1/1) ... [2022-11-18 19:38:29,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:38:29,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:29,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:38:29,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:38:29,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:38:29,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:38:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:38:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:38:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:38:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 19:38:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:38:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:38:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:38:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 19:38:29,115 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 19:38:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:38:29,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:38:29,118 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:38:29,364 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:38:29,366 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:38:29,994 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:38:30,004 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:38:30,004 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 19:38:30,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:38:30 BoogieIcfgContainer [2022-11-18 19:38:30,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:38:30,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:38:30,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:38:30,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:38:30,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:38:28" (1/3) ... [2022-11-18 19:38:30,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aad6e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:38:30, skipping insertion in model container [2022-11-18 19:38:30,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:28" (2/3) ... [2022-11-18 19:38:30,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aad6e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:38:30, skipping insertion in model container [2022-11-18 19:38:30,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:38:30" (3/3) ... [2022-11-18 19:38:30,020 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_12-arraycollapse_rc.i [2022-11-18 19:38:30,040 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:38:30,040 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 59 error locations. [2022-11-18 19:38:30,040 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:38:30,172 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 19:38:30,209 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 19:38:30,223 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 258 places, 259 transitions, 523 flow [2022-11-18 19:38:30,226 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 258 places, 259 transitions, 523 flow [2022-11-18 19:38:30,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 259 transitions, 523 flow [2022-11-18 19:38:30,322 INFO L130 PetriNetUnfolder]: 5/258 cut-off events. [2022-11-18 19:38:30,324 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:38:30,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 258 events. 5/258 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 401 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 173. Up to 2 conditions per place. [2022-11-18 19:38:30,338 INFO L119 LiptonReduction]: Number of co-enabled transitions 3136 [2022-11-18 19:39:35,428 WARN L233 SmtUtils]: Spent 11.57s on a formula simplification. DAG size of input: 220 DAG size of output: 204 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-18 19:39:40,779 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification that was a NOOP. DAG size: 196 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-18 19:39:55,491 WARN L233 SmtUtils]: Spent 14.71s on a formula simplification. DAG size of input: 221 DAG size of output: 207 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-18 19:40:00,896 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification that was a NOOP. DAG size: 199 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-18 19:40:28,641 WARN L233 SmtUtils]: Spent 21.22s on a formula simplification. DAG size of input: 281 DAG size of output: 272 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-18 19:40:40,578 WARN L233 SmtUtils]: Spent 11.93s on a formula simplification that was a NOOP. DAG size: 244 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-18 19:41:08,159 WARN L233 SmtUtils]: Spent 27.58s on a formula simplification. DAG size of input: 290 DAG size of output: 281 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-18 19:41:21,119 WARN L233 SmtUtils]: Spent 12.95s on a formula simplification that was a NOOP. DAG size: 253 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-18 19:41:41,215 INFO L134 LiptonReduction]: Checked pairs total: 12203 [2022-11-18 19:41:41,216 INFO L136 LiptonReduction]: Total number of compositions: 366 [2022-11-18 19:41:41,224 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 81 transitions, 167 flow [2022-11-18 19:41:41,260 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 391 states, 248 states have (on average 2.8306451612903225) internal successors, (702), 390 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:41,278 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:41:41,282 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;@39e2ccf3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:41:41,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2022-11-18 19:41:41,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 391 states, 248 states have (on average 2.8306451612903225) internal successors, (702), 390 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:41,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:41:41,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:41,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:41:41,292 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-18 19:41:41,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:41,296 INFO L85 PathProgramCache]: Analyzing trace with hash 29914, now seen corresponding path program 1 times [2022-11-18 19:41:41,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:41,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227179668] [2022-11-18 19:41:41,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:41,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:41,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:41,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:41,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227179668] [2022-11-18 19:41:41,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227179668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:41,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:41,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:41:41,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974649213] [2022-11-18 19:41:41,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:41,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:41:41,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:41,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:41:41,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:41:41,549 INFO L87 Difference]: Start difference. First operand has 391 states, 248 states have (on average 2.8306451612903225) internal successors, (702), 390 states have internal predecessors, (702), 0 states have call successors, (0), 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 2 states, 1 states have (on average 2.0) 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) [2022-11-18 19:41:42,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:42,076 INFO L93 Difference]: Finished difference Result 328 states and 609 transitions. [2022-11-18 19:41:42,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:41:42,079 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) 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 [2022-11-18 19:41:42,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:42,091 INFO L225 Difference]: With dead ends: 328 [2022-11-18 19:41:42,092 INFO L226 Difference]: Without dead ends: 328 [2022-11-18 19:41:42,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:41:42,096 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:42,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:41:42,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-11-18 19:41:42,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2022-11-18 19:41:42,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 232 states have (on average 2.625) internal successors, (609), 327 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:42,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 609 transitions. [2022-11-18 19:41:42,155 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 609 transitions. Word has length 2 [2022-11-18 19:41:42,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:42,156 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 609 transitions. [2022-11-18 19:41:42,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) 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) [2022-11-18 19:41:42,156 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 609 transitions. [2022-11-18 19:41:42,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:41:42,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:42,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:41:42,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:41:42,158 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-18 19:41:42,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:42,159 INFO L85 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2022-11-18 19:41:42,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:42,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017876161] [2022-11-18 19:41:42,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:42,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:42,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:42,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017876161] [2022-11-18 19:41:42,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017876161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:42,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:42,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:41:42,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062490649] [2022-11-18 19:41:42,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:42,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:41:42,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:42,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:41:42,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:41:42,284 INFO L87 Difference]: Start difference. First operand 328 states and 609 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) [2022-11-18 19:41:43,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:43,003 INFO L93 Difference]: Finished difference Result 331 states and 612 transitions. [2022-11-18 19:41:43,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:41:43,004 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 [2022-11-18 19:41:43,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:43,006 INFO L225 Difference]: With dead ends: 331 [2022-11-18 19:41:43,006 INFO L226 Difference]: Without dead ends: 331 [2022-11-18 19:41:43,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:41:43,008 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:43,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:41:43,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-11-18 19:41:43,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2022-11-18 19:41:43,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 233 states have (on average 2.6266094420600856) internal successors, (612), 328 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 612 transitions. [2022-11-18 19:41:43,032 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 612 transitions. Word has length 2 [2022-11-18 19:41:43,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:43,032 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 612 transitions. [2022-11-18 19:41:43,033 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) [2022-11-18 19:41:43,033 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 612 transitions. [2022-11-18 19:41:43,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:41:43,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:43,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:41:43,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:41:43,034 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-18 19:41:43,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:43,035 INFO L85 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2022-11-18 19:41:43,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:43,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788998223] [2022-11-18 19:41:43,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:43,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:43,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:43,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:43,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788998223] [2022-11-18 19:41:43,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788998223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:43,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:43,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:41:43,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269010723] [2022-11-18 19:41:43,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:43,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:41:43,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:43,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:41:43,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:41:43,289 INFO L87 Difference]: Start difference. First operand 329 states and 612 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) [2022-11-18 19:41:43,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:43,785 INFO L93 Difference]: Finished difference Result 329 states and 610 transitions. [2022-11-18 19:41:43,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:41:43,786 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 [2022-11-18 19:41:43,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:43,789 INFO L225 Difference]: With dead ends: 329 [2022-11-18 19:41:43,789 INFO L226 Difference]: Without dead ends: 329 [2022-11-18 19:41:43,789 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 [2022-11-18 19:41:43,790 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:43,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:41:43,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-11-18 19:41:43,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2022-11-18 19:41:43,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 233 states have (on average 2.6180257510729614) internal successors, (610), 328 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:43,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 610 transitions. [2022-11-18 19:41:43,809 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 610 transitions. Word has length 2 [2022-11-18 19:41:43,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:43,809 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 610 transitions. [2022-11-18 19:41:43,810 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) [2022-11-18 19:41:43,810 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 610 transitions. [2022-11-18 19:41:43,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 19:41:43,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:43,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 19:41:43,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:41:43,811 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-18 19:41:43,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:43,812 INFO L85 PathProgramCache]: Analyzing trace with hash 927906, now seen corresponding path program 1 times [2022-11-18 19:41:43,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:43,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078844091] [2022-11-18 19:41:43,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:43,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:43,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:43,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:43,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078844091] [2022-11-18 19:41:43,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078844091] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:43,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690754228] [2022-11-18 19:41:43,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:43,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:43,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:43,931 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:43,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:41:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:44,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:41:44,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:44,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:44,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:44,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690754228] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:44,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:44,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-18 19:41:44,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754216030] [2022-11-18 19:41:44,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:44,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:41:44,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:44,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:41:44,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:41:44,193 INFO L87 Difference]: Start difference. First operand 329 states and 610 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2022-11-18 19:41:45,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:45,243 INFO L93 Difference]: Finished difference Result 336 states and 619 transitions. [2022-11-18 19:41:45,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:41:45,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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 3 [2022-11-18 19:41:45,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:45,245 INFO L225 Difference]: With dead ends: 336 [2022-11-18 19:41:45,246 INFO L226 Difference]: Without dead ends: 336 [2022-11-18 19:41:45,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:41:45,247 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:45,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 12 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:41:45,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-18 19:41:45,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 332. [2022-11-18 19:41:45,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 236 states have (on average 2.6228813559322033) internal successors, (619), 331 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:45,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 619 transitions. [2022-11-18 19:41:45,264 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 619 transitions. Word has length 3 [2022-11-18 19:41:45,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:45,264 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 619 transitions. [2022-11-18 19:41:45,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2022-11-18 19:41:45,265 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 619 transitions. [2022-11-18 19:41:45,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 19:41:45,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:45,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 19:41:45,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 19:41:45,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:45,472 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-18 19:41:45,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:45,472 INFO L85 PathProgramCache]: Analyzing trace with hash 927867, now seen corresponding path program 1 times [2022-11-18 19:41:45,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:45,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221709560] [2022-11-18 19:41:45,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:45,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:46,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:46,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221709560] [2022-11-18 19:41:46,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221709560] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:46,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240688556] [2022-11-18 19:41:46,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:46,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:46,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:46,012 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:46,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:41:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:46,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 19:41:46,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:46,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:46,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:46,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:46,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-18 19:41:46,377 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-18 19:41:46,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 43 treesize of output 49 [2022-11-18 19:41:46,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:46,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:52,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:52,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240688556] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:52,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:52,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-11-18 19:41:52,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576306310] [2022-11-18 19:41:52,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:52,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:41:52,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:52,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:41:52,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:41:52,828 INFO L87 Difference]: Start difference. First operand 332 states and 619 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2022-11-18 19:41:53,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:53,697 INFO L93 Difference]: Finished difference Result 332 states and 617 transitions. [2022-11-18 19:41:53,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:41:53,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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 3 [2022-11-18 19:41:53,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:53,700 INFO L225 Difference]: With dead ends: 332 [2022-11-18 19:41:53,701 INFO L226 Difference]: Without dead ends: 332 [2022-11-18 19:41:53,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:41:53,702 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:53,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 51 Unchecked, 0.9s Time] [2022-11-18 19:41:53,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-18 19:41:53,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2022-11-18 19:41:53,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 236 states have (on average 2.614406779661017) internal successors, (617), 331 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:53,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 617 transitions. [2022-11-18 19:41:53,715 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 617 transitions. Word has length 3 [2022-11-18 19:41:53,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:53,715 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 617 transitions. [2022-11-18 19:41:53,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2022-11-18 19:41:53,715 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 617 transitions. [2022-11-18 19:41:53,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 19:41:53,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:53,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 19:41:53,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:53,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:53,922 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-18 19:41:53,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:53,922 INFO L85 PathProgramCache]: Analyzing trace with hash 927869, now seen corresponding path program 1 times [2022-11-18 19:41:53,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:53,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559409709] [2022-11-18 19:41:53,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:53,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:54,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:54,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:54,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559409709] [2022-11-18 19:41:54,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559409709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:54,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:54,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:41:54,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285968413] [2022-11-18 19:41:54,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:54,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:41:54,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:54,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:41:54,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:41:54,187 INFO L87 Difference]: Start difference. First operand 332 states and 617 transitions. Second operand has 3 states, 2 states have (on average 1.5) 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) [2022-11-18 19:41:54,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:54,455 INFO L93 Difference]: Finished difference Result 335 states and 601 transitions. [2022-11-18 19:41:54,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:41:54,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) 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 [2022-11-18 19:41:54,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:54,459 INFO L225 Difference]: With dead ends: 335 [2022-11-18 19:41:54,459 INFO L226 Difference]: Without dead ends: 335 [2022-11-18 19:41:54,459 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 [2022-11-18 19:41:54,460 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:54,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:41:54,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-18 19:41:54,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 299. [2022-11-18 19:41:54,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 216 states have (on average 2.550925925925926) internal successors, (551), 298 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:54,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 551 transitions. [2022-11-18 19:41:54,471 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 551 transitions. Word has length 3 [2022-11-18 19:41:54,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:54,472 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 551 transitions. [2022-11-18 19:41:54,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) 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) [2022-11-18 19:41:54,473 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 551 transitions. [2022-11-18 19:41:54,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 19:41:54,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:54,474 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-11-18 19:41:54,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:41:54,474 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-18 19:41:54,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:54,475 INFO L85 PathProgramCache]: Analyzing trace with hash 891751803, now seen corresponding path program 2 times [2022-11-18 19:41:54,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:54,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312930111] [2022-11-18 19:41:54,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:54,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:55,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:55,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:55,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312930111] [2022-11-18 19:41:55,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312930111] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:55,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749250028] [2022-11-18 19:41:55,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:41:55,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:55,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:55,939 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:55,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:41:56,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:41:56,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:56,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-18 19:41:56,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:56,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:56,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:56,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:56,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-18 19:41:56,348 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-18 19:41:56,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 43 treesize of output 49 [2022-11-18 19:41:56,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:56,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:56,425 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:41:56,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2022-11-18 19:41:56,468 INFO L321 Elim1Store]: treesize reduction 21, result has 48.8 percent of original size [2022-11-18 19:41:56,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 52 treesize of output 61 [2022-11-18 19:41:56,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:56,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:56,537 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:41:56,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 39 [2022-11-18 19:41:56,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:56,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:56,568 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-18 19:41:56,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 30 [2022-11-18 19:41:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:56,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:00,835 INFO L321 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2022-11-18 19:42:00,836 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 79 treesize of output 114 [2022-11-18 19:42:03,852 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (* |c_ULTIMATE.start_main_~i~1#1| 4))) (let ((.cse0 (< 4 (+ |c_~#slot~0.offset| .cse3))) (.cse1 (+ |c_~#slot~0.offset| 8 .cse3)) (.cse2 (+ |c_~#slot~0.offset| 4 .cse3))) (and (or .cse0 (forall ((|v_ULTIMATE.start_new_~p~0#1.base_334| Int) (v_ArrVal_1112 Int) (v_ArrVal_1111 Int) (v_prenex_1 Int) (v_ArrVal_1113 Int)) (or (= |c_~#slot~0.base| v_prenex_1) (= |v_ULTIMATE.start_new_~p~0#1.base_334| v_prenex_1) (<= .cse1 (select (store (store (store |c_#length| |c_~#slot~0.base| v_ArrVal_1111) |v_ULTIMATE.start_new_~p~0#1.base_334| v_ArrVal_1112) v_prenex_1 v_ArrVal_1113) |c_~#slot~0.base|)) (= |c_~#slot~0.base| |v_ULTIMATE.start_new_~p~0#1.base_334|)))) (forall ((|v_ULTIMATE.start_new_~p~0#1.base_334| Int)) (or (forall ((v_ArrVal_1110 Int)) (or (forall ((|v_ULTIMATE.start_new_#t~malloc30#1.base_344| Int)) (or (= |v_ULTIMATE.start_new_~p~0#1.base_334| |v_ULTIMATE.start_new_#t~malloc30#1.base_344|) (forall ((v_ArrVal_1112 Int) (v_prenex_1 Int) (v_ArrVal_1111 Int) (v_ArrVal_1113 Int)) (or (= |c_~#slot~0.base| v_prenex_1) (<= .cse1 (select (store (store (store |c_#length| |v_ULTIMATE.start_new_#t~malloc30#1.base_344| v_ArrVal_1111) |v_ULTIMATE.start_new_~p~0#1.base_334| v_ArrVal_1112) v_prenex_1 v_ArrVal_1113) |c_~#slot~0.base|)) (= |v_ULTIMATE.start_new_#t~malloc30#1.base_344| v_prenex_1) (= |v_ULTIMATE.start_new_~p~0#1.base_334| v_prenex_1))) (not (<= .cse2 (select (store |c_#length| |v_ULTIMATE.start_new_#t~malloc30#1.base_344| v_ArrVal_1110) |c_~#slot~0.base|))))) (not (<= v_ArrVal_1110 8)))) (= |c_~#slot~0.base| |v_ULTIMATE.start_new_~p~0#1.base_334|))) (forall ((|v_ULTIMATE.start_new_~p~0#1.base_334| Int)) (or (forall ((v_ArrVal_1110 Int)) (or (forall ((|v_ULTIMATE.start_new_#t~malloc30#1.base_344| Int)) (or (= |v_ULTIMATE.start_new_~p~0#1.base_334| |v_ULTIMATE.start_new_#t~malloc30#1.base_344|) (forall ((v_ArrVal_1112 Int) (v_ArrVal_1111 Int) (v_prenex_1 Int) (v_ArrVal_1113 Int)) (or (= |c_~#slot~0.base| v_prenex_1) (<= .cse1 (select (store (store (store |c_#length| |v_ULTIMATE.start_new_#t~malloc30#1.base_344| v_ArrVal_1111) |v_ULTIMATE.start_new_~p~0#1.base_334| v_ArrVal_1112) v_prenex_1 v_ArrVal_1113) |c_~#slot~0.base|)) (= |v_ULTIMATE.start_new_#t~malloc30#1.base_344| v_prenex_1) (= |v_ULTIMATE.start_new_~p~0#1.base_334| v_prenex_1))) (not (<= .cse2 (select (store |c_#length| |v_ULTIMATE.start_new_#t~malloc30#1.base_344| v_ArrVal_1110) |c_~#slot~0.base|))))) (not (<= v_ArrVal_1110 8)))) (= |c_~#slot~0.base| |v_ULTIMATE.start_new_~p~0#1.base_334|))) (or .cse0 (and (forall ((|v_ULTIMATE.start_new_~p~0#1.base_334| Int)) (or (forall ((v_ArrVal_1112 Int) (v_prenex_1 Int) (v_ArrVal_1111 Int) (v_ArrVal_1113 Int)) (or (= |c_~#slot~0.base| v_prenex_1) (= |v_ULTIMATE.start_new_~p~0#1.base_334| v_prenex_1) (<= .cse1 (select (store (store (store |c_#length| |c_~#slot~0.base| v_ArrVal_1111) |v_ULTIMATE.start_new_~p~0#1.base_334| v_ArrVal_1112) v_prenex_1 v_ArrVal_1113) |c_~#slot~0.base|)))) (= |c_~#slot~0.base| |v_ULTIMATE.start_new_~p~0#1.base_334|))) (forall ((|v_ULTIMATE.start_new_~p~0#1.base_334| Int)) (or (forall ((v_ArrVal_1112 Int) (v_ArrVal_1111 Int) (v_prenex_1 Int) (v_ArrVal_1113 Int)) (or (= |c_~#slot~0.base| v_prenex_1) (= |v_ULTIMATE.start_new_~p~0#1.base_334| v_prenex_1) (<= .cse1 (select (store (store (store |c_#length| |c_~#slot~0.base| v_ArrVal_1111) |v_ULTIMATE.start_new_~p~0#1.base_334| v_ArrVal_1112) v_prenex_1 v_ArrVal_1113) |c_~#slot~0.base|)))) (= |c_~#slot~0.base| |v_ULTIMATE.start_new_~p~0#1.base_334|))))) (or (forall ((v_ArrVal_1110 Int) (|v_ULTIMATE.start_new_#t~malloc30#1.base_344| Int)) (or (not (<= .cse2 (select (store |c_#length| |v_ULTIMATE.start_new_#t~malloc30#1.base_344| v_ArrVal_1110) |c_~#slot~0.base|))) (not (<= v_ArrVal_1110 8)))) (<= 0 .cse2))))) is different from false [2022-11-18 19:42:52,537 WARN L233 SmtUtils]: Spent 47.58s on a formula simplification. DAG size of input: 116 DAG size of output: 72 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:43:03,274 WARN L233 SmtUtils]: Spent 7.73s on a formula simplification that was a NOOP. DAG size: 90 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:43:03,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-18 19:43:03,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749250028] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:43:03,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:43:03,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2022-11-18 19:43:03,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008757010] [2022-11-18 19:43:03,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:43:03,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:43:03,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:03,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:43:03,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=116, Unknown=2, NotChecked=22, Total=182 [2022-11-18 19:43:03,278 INFO L87 Difference]: Start difference. First operand 299 states and 551 transitions. Second operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:43:23,040 WARN L233 SmtUtils]: Spent 14.96s on a formula simplification. DAG size of input: 133 DAG size of output: 97 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:43:25,056 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (* |c_ULTIMATE.start_main_~i~1#1| 4))) (let ((.cse3 (+ |c_~#slot~0.offset| .cse4))) (let ((.cse0 (< 4 .cse3)) (.cse1 (+ |c_~#slot~0.offset| 8 .cse4)) (.cse2 (+ |c_~#slot~0.offset| 4 .cse4))) (and (or .cse0 (forall ((|v_ULTIMATE.start_new_~p~0#1.base_334| Int) (v_ArrVal_1112 Int) (v_ArrVal_1111 Int) (v_prenex_1 Int) (v_ArrVal_1113 Int)) (or (= |c_~#slot~0.base| v_prenex_1) (= |v_ULTIMATE.start_new_~p~0#1.base_334| v_prenex_1) (<= .cse1 (select (store (store (store |c_#length| |c_~#slot~0.base| v_ArrVal_1111) |v_ULTIMATE.start_new_~p~0#1.base_334| v_ArrVal_1112) v_prenex_1 v_ArrVal_1113) |c_~#slot~0.base|)) (= |c_~#slot~0.base| |v_ULTIMATE.start_new_~p~0#1.base_334|)))) (forall ((|v_ULTIMATE.start_new_~p~0#1.base_334| Int)) (or (forall ((v_ArrVal_1110 Int)) (or (forall ((|v_ULTIMATE.start_new_#t~malloc30#1.base_344| Int)) (or (= |v_ULTIMATE.start_new_~p~0#1.base_334| |v_ULTIMATE.start_new_#t~malloc30#1.base_344|) (forall ((v_ArrVal_1112 Int) (v_prenex_1 Int) (v_ArrVal_1111 Int) (v_ArrVal_1113 Int)) (or (= |c_~#slot~0.base| v_prenex_1) (<= .cse1 (select (store (store (store |c_#length| |v_ULTIMATE.start_new_#t~malloc30#1.base_344| v_ArrVal_1111) |v_ULTIMATE.start_new_~p~0#1.base_334| v_ArrVal_1112) v_prenex_1 v_ArrVal_1113) |c_~#slot~0.base|)) (= |v_ULTIMATE.start_new_#t~malloc30#1.base_344| v_prenex_1) (= |v_ULTIMATE.start_new_~p~0#1.base_334| v_prenex_1))) (not (<= .cse2 (select (store |c_#length| |v_ULTIMATE.start_new_#t~malloc30#1.base_344| v_ArrVal_1110) |c_~#slot~0.base|))))) (not (<= v_ArrVal_1110 8)))) (= |c_~#slot~0.base| |v_ULTIMATE.start_new_~p~0#1.base_334|))) (or (<= 0 .cse3) (forall ((|v_ULTIMATE.start_new_~p~0#1.base_333| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_333|) 0)))) (forall ((|v_ULTIMATE.start_new_~p~0#1.base_334| Int)) (or (forall ((v_ArrVal_1110 Int)) (or (forall ((|v_ULTIMATE.start_new_#t~malloc30#1.base_344| Int)) (or (= |v_ULTIMATE.start_new_~p~0#1.base_334| |v_ULTIMATE.start_new_#t~malloc30#1.base_344|) (forall ((v_ArrVal_1112 Int) (v_ArrVal_1111 Int) (v_prenex_1 Int) (v_ArrVal_1113 Int)) (or (= |c_~#slot~0.base| v_prenex_1) (<= .cse1 (select (store (store (store |c_#length| |v_ULTIMATE.start_new_#t~malloc30#1.base_344| v_ArrVal_1111) |v_ULTIMATE.start_new_~p~0#1.base_334| v_ArrVal_1112) v_prenex_1 v_ArrVal_1113) |c_~#slot~0.base|)) (= |v_ULTIMATE.start_new_#t~malloc30#1.base_344| v_prenex_1) (= |v_ULTIMATE.start_new_~p~0#1.base_334| v_prenex_1))) (not (<= .cse2 (select (store |c_#length| |v_ULTIMATE.start_new_#t~malloc30#1.base_344| v_ArrVal_1110) |c_~#slot~0.base|))))) (not (<= v_ArrVal_1110 8)))) (= |c_~#slot~0.base| |v_ULTIMATE.start_new_~p~0#1.base_334|))) (forall ((|v_ULTIMATE.start_new_~p~0#1.base_333| Int)) (or (forall ((v_ArrVal_1113 Int)) (<= .cse2 (select (store |c_#length| |v_ULTIMATE.start_new_~p~0#1.base_333| v_ArrVal_1113) |c_~#slot~0.base|))) (not (= (select |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_333|) 0)))) (or .cse0 (and (forall ((|v_ULTIMATE.start_new_~p~0#1.base_334| Int)) (or (forall ((v_ArrVal_1112 Int) (v_prenex_1 Int) (v_ArrVal_1111 Int) (v_ArrVal_1113 Int)) (or (= |c_~#slot~0.base| v_prenex_1) (= |v_ULTIMATE.start_new_~p~0#1.base_334| v_prenex_1) (<= .cse1 (select (store (store (store |c_#length| |c_~#slot~0.base| v_ArrVal_1111) |v_ULTIMATE.start_new_~p~0#1.base_334| v_ArrVal_1112) v_prenex_1 v_ArrVal_1113) |c_~#slot~0.base|)))) (= |c_~#slot~0.base| |v_ULTIMATE.start_new_~p~0#1.base_334|))) (forall ((|v_ULTIMATE.start_new_~p~0#1.base_334| Int)) (or (forall ((v_ArrVal_1112 Int) (v_ArrVal_1111 Int) (v_prenex_1 Int) (v_ArrVal_1113 Int)) (or (= |c_~#slot~0.base| v_prenex_1) (= |v_ULTIMATE.start_new_~p~0#1.base_334| v_prenex_1) (<= .cse1 (select (store (store (store |c_#length| |c_~#slot~0.base| v_ArrVal_1111) |v_ULTIMATE.start_new_~p~0#1.base_334| v_ArrVal_1112) v_prenex_1 v_ArrVal_1113) |c_~#slot~0.base|)))) (= |c_~#slot~0.base| |v_ULTIMATE.start_new_~p~0#1.base_334|))))) (or (forall ((v_ArrVal_1110 Int) (|v_ULTIMATE.start_new_#t~malloc30#1.base_344| Int)) (or (not (<= .cse2 (select (store |c_#length| |v_ULTIMATE.start_new_#t~malloc30#1.base_344| v_ArrVal_1110) |c_~#slot~0.base|))) (not (<= v_ArrVal_1110 8)))) (<= 0 .cse2)))))) is different from false [2022-11-18 19:43:25,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:25,209 INFO L93 Difference]: Finished difference Result 302 states and 574 transitions. [2022-11-18 19:43:25,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:43:25,209 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 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 [2022-11-18 19:43:25,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:25,211 INFO L225 Difference]: With dead ends: 302 [2022-11-18 19:43:25,211 INFO L226 Difference]: Without dead ends: 302 [2022-11-18 19:43:25,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 85.8s TimeCoverageRelationStatistics Valid=70, Invalid=206, Unknown=4, NotChecked=62, Total=342 [2022-11-18 19:43:25,212 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 166 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:25,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 166 Unchecked, 0.3s Time] [2022-11-18 19:43:25,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-18 19:43:25,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2022-11-18 19:43:25,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 219 states have (on average 2.6210045662100456) internal successors, (574), 301 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:43:25,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 574 transitions. [2022-11-18 19:43:25,226 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 574 transitions. Word has length 5 [2022-11-18 19:43:25,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:25,226 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 574 transitions. [2022-11-18 19:43:25,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:43:25,226 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 574 transitions. [2022-11-18 19:43:25,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 19:43:25,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:25,227 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-18 19:43:25,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:43:25,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:25,434 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-18 19:43:25,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:25,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1874504394, now seen corresponding path program 2 times [2022-11-18 19:43:25,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:25,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741025547] [2022-11-18 19:43:25,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:25,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:25,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:25,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741025547] [2022-11-18 19:43:25,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741025547] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:25,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067707902] [2022-11-18 19:43:25,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:43:25,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:25,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:25,748 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:25,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:43:26,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:43:26,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:43:26,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:43:26,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:26,141 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:26,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:43:26,204 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:26,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067707902] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:43:26,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:43:26,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:43:26,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574924105] [2022-11-18 19:43:26,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:43:26,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:43:26,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:26,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:43:26,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:43:26,206 INFO L87 Difference]: Start difference. First operand 302 states and 574 transitions. Second operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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) [2022-11-18 19:43:27,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:27,741 INFO L93 Difference]: Finished difference Result 307 states and 559 transitions. [2022-11-18 19:43:27,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:43:27,742 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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 6 [2022-11-18 19:43:27,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:27,743 INFO L225 Difference]: With dead ends: 307 [2022-11-18 19:43:27,744 INFO L226 Difference]: Without dead ends: 307 [2022-11-18 19:43:27,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:43:27,744 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:27,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 9 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 19:43:27,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-18 19:43:27,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 305. [2022-11-18 19:43:27,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 222 states have (on average 2.518018018018018) internal successors, (559), 304 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:43:27,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 559 transitions. [2022-11-18 19:43:27,754 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 559 transitions. Word has length 6 [2022-11-18 19:43:27,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:27,754 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 559 transitions. [2022-11-18 19:43:27,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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) [2022-11-18 19:43:27,754 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 559 transitions. [2022-11-18 19:43:27,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:43:27,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:27,755 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1] [2022-11-18 19:43:27,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 19:43:27,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:27,961 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-18 19:43:27,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:27,962 INFO L85 PathProgramCache]: Analyzing trace with hash 196679547, now seen corresponding path program 3 times [2022-11-18 19:43:27,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:27,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808732750] [2022-11-18 19:43:27,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:27,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:33,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:33,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808732750] [2022-11-18 19:43:33,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808732750] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:33,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033774873] [2022-11-18 19:43:33,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:43:33,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:33,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:33,560 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:33,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:44:12,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 19:44:12,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:44:12,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 158 conjunts are in the unsatisfiable core [2022-11-18 19:44:12,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:44:12,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:12,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:12,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:12,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-18 19:44:12,722 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-18 19:44:12,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 43 treesize of output 49 [2022-11-18 19:44:12,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:12,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:12,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:12,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-18 19:44:12,888 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-18 19:44:12,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 48 treesize of output 65 [2022-11-18 19:44:12,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:12,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:12,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:12,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-18 19:44:13,087 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-18 19:44:13,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 53 treesize of output 81 [2022-11-18 19:44:13,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:13,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:13,269 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:44:13,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2022-11-18 19:44:13,370 INFO L321 Elim1Store]: treesize reduction 45, result has 49.4 percent of original size [2022-11-18 19:44:13,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 67 treesize of output 94 [2022-11-18 19:44:13,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:13,481 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-18 19:44:13,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-18 19:44:13,498 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:44:13,499 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 37 treesize of output 37 [2022-11-18 19:44:13,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:13,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:13,646 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:44:13,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2022-11-18 19:44:13,690 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-18 19:44:13,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 43 [2022-11-18 19:44:13,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:13,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:13,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:13,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:13,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:13,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:44:13,850 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 19:44:13,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 38 [2022-11-18 19:44:13,923 INFO L321 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2022-11-18 19:44:13,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 48 treesize of output 65 [2022-11-18 19:44:14,030 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:44:14,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:44:16,386 INFO L321 Elim1Store]: treesize reduction 56, result has 30.9 percent of original size [2022-11-18 19:44:16,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 474 treesize of output 480 [2022-11-18 19:44:24,094 WARN L233 SmtUtils]: Spent 6.38s on a formula simplification that was a NOOP. DAG size: 80 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:44:24,376 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 19:44:24,377 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 41 treesize of output 40 [2022-11-18 19:44:44,604 WARN L233 SmtUtils]: Spent 19.21s on a formula simplification. DAG size of input: 101 DAG size of output: 84 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:45:17,449 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:17,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033774873] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:45:17,450 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:45:17,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-11-18 19:45:17,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881463408] [2022-11-18 19:45:17,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:45:17,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 19:45:17,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:17,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 19:45:17,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=538, Unknown=3, NotChecked=0, Total=650 [2022-11-18 19:45:17,452 INFO L87 Difference]: Start difference. First operand 305 states and 559 transitions. Second operand has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:45:25,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:25,782 INFO L93 Difference]: Finished difference Result 305 states and 556 transitions. [2022-11-18 19:45:25,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:45:25,782 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 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 [2022-11-18 19:45:25,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:25,784 INFO L225 Difference]: With dead ends: 305 [2022-11-18 19:45:25,784 INFO L226 Difference]: Without dead ends: 305 [2022-11-18 19:45:25,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 60.9s TimeCoverageRelationStatistics Valid=207, Invalid=910, Unknown=5, NotChecked=0, Total=1122 [2022-11-18 19:45:25,785 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:25,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 106 Unchecked, 0.6s Time] [2022-11-18 19:45:25,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-18 19:45:25,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2022-11-18 19:45:25,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 222 states have (on average 2.5045045045045047) internal successors, (556), 304 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:45:25,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 556 transitions. [2022-11-18 19:45:25,796 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 556 transitions. Word has length 9 [2022-11-18 19:45:25,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:25,797 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 556 transitions. [2022-11-18 19:45:25,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:45:25,797 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 556 transitions. [2022-11-18 19:45:25,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 19:45:25,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:25,798 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-18 19:45:25,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:45:26,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 19:45:26,011 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-18 19:45:26,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:26,012 INFO L85 PathProgramCache]: Analyzing trace with hash 947215306, now seen corresponding path program 3 times [2022-11-18 19:45:26,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:26,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348350722] [2022-11-18 19:45:26,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:26,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 36 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:29,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:29,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348350722] [2022-11-18 19:45:29,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348350722] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:45:29,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063899300] [2022-11-18 19:45:29,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:45:29,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:45:29,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:45:29,123 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:45:29,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:45:29,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 19:45:29,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:45:29,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 19:45:29,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:45:29,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:45:29,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:45:29,767 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:45:29,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 44 [2022-11-18 19:45:29,807 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-18 19:45:29,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 43 [2022-11-18 19:45:29,955 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 19:45:29,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:45:29,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063899300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:29,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:45:29,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 13 [2022-11-18 19:45:29,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839238698] [2022-11-18 19:45:29,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:29,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:45:29,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:29,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:45:29,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:45:29,956 INFO L87 Difference]: Start difference. First operand 305 states and 556 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2022-11-18 19:45:30,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:30,075 INFO L93 Difference]: Finished difference Result 304 states and 555 transitions. [2022-11-18 19:45:30,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:45:30,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 12 [2022-11-18 19:45:30,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:30,077 INFO L225 Difference]: With dead ends: 304 [2022-11-18 19:45:30,077 INFO L226 Difference]: Without dead ends: 304 [2022-11-18 19:45:30,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:45:30,078 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:30,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 9 Unchecked, 0.1s Time] [2022-11-18 19:45:30,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-18 19:45:30,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2022-11-18 19:45:30,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 222 states have (on average 2.5) internal successors, (555), 303 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:45:30,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 555 transitions. [2022-11-18 19:45:30,109 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 555 transitions. Word has length 12 [2022-11-18 19:45:30,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:30,109 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 555 transitions. [2022-11-18 19:45:30,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2022-11-18 19:45:30,110 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 555 transitions. [2022-11-18 19:45:30,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 19:45:30,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:30,110 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-18 19:45:30,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:45:30,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:45:30,311 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-18 19:45:30,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:30,312 INFO L85 PathProgramCache]: Analyzing trace with hash 947215307, now seen corresponding path program 1 times [2022-11-18 19:45:30,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:30,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841674153] [2022-11-18 19:45:30,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:30,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:48,890 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:48,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:48,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841674153] [2022-11-18 19:46:48,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841674153] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:48,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183593248] [2022-11-18 19:46:48,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:48,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:48,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:48,894 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:48,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66d002-178e-4a7b-a7b5-8fa4db0fc960/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:46:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:51,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 2018 conjuncts, 858 conjunts are in the unsatisfiable core [2022-11-18 19:46:51,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:51,270 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 7 treesize of output 6 [2022-11-18 19:46:51,282 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 7 treesize of output 6 [2022-11-18 19:46:51,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,470 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:46:51,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 55 [2022-11-18 19:46:51,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 23 [2022-11-18 19:46:51,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-18 19:46:51,545 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-18 19:46:51,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 43 treesize of output 49 [2022-11-18 19:46:51,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:46:51,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 73 [2022-11-18 19:46:51,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 31 [2022-11-18 19:46:51,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:51,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-18 19:46:51,921 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-18 19:46:51,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 53 treesize of output 81 [2022-11-18 19:46:52,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 72 [2022-11-18 19:46:52,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 33 [2022-11-18 19:46:52,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 13 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 37 [2022-11-18 19:46:52,461 INFO L321 Elim1Store]: treesize reduction 174, result has 25.0 percent of original size [2022-11-18 19:46:52,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 97 [2022-11-18 19:46:52,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,948 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:46:52,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 74 [2022-11-18 19:46:52,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:52,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:53,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:53,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:53,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 38 [2022-11-18 19:46:53,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:53,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:53,396 INFO L321 Elim1Store]: treesize reduction 230, result has 25.8 percent of original size [2022-11-18 19:46:53,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 20 case distinctions, treesize of input 54 treesize of output 113 [2022-11-18 19:46:53,473 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:46:53,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 26 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 65 [2022-11-18 19:46:54,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:54,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:54,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:54,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:54,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:54,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:46:54,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 79 [2022-11-18 19:46:54,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:54,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:54,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:54,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:54,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:54,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 43 [2022-11-18 19:46:54,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:54,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:54,761 INFO L217 Elim1Store]: Index analysis took 131 ms [2022-11-18 19:46:55,167 INFO L321 Elim1Store]: treesize reduction 68, result has 47.3 percent of original size [2022-11-18 19:46:55,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 16 case distinctions, treesize of input 55 treesize of output 95 [2022-11-18 19:46:55,257 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:46:55,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 81 [2022-11-18 19:46:56,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:56,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:56,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:56,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:56,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:56,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:46:56,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 93 [2022-11-18 19:46:56,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:56,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:56,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:56,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:56,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:56,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 51 [2022-11-18 19:46:56,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:56,526 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:46:56,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-18 19:46:56,710 INFO L217 Elim1Store]: Index analysis took 143 ms [2022-11-18 19:46:57,601 INFO L321 Elim1Store]: treesize reduction 175, result has 34.0 percent of original size [2022-11-18 19:46:57,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 31 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 78 treesize of output 150 [2022-11-18 19:49:44,819 WARN L233 SmtUtils]: Spent 1.56m on a formula simplification. DAG size of input: 498 DAG size of output: 271 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:49:46,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:46,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:46,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:46,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:46,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:46,638 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:49:46,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 89 [2022-11-18 19:49:46,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:46,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:46,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:46,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:46,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:46,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1767 treesize of output 1738 [2022-11-18 19:49:46,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:46,830 INFO L190 IndexEqualityManager]: detected not equals via solver