./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/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_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/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_862ad59d-e85e-4ddd-ad43-917df9b57ac2/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 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- 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 19:38:44,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:38:44,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:38:44,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:38:44,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:38:44,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:38:44,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:38:44,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:38:44,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:38:44,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:38:44,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:38:44,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:38:44,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:38:44,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:38:44,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:38:44,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:38:44,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:38:44,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:38:44,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:38:44,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:38:44,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:38:44,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:38:44,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:38:44,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:38:44,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:38:44,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:38:44,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:38:44,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:38:44,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:38:44,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:38:44,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:38:44,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:38:44,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:38:44,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:38:44,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:38:44,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:38:44,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:38:44,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:38:44,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:38:44,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:38:44,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:38:44,154 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 19:38:44,200 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:38:44,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:38:44,201 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:38:44,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:38:44,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:38:44,203 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:38:44,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:38:44,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:38:44,204 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:38:44,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:38:44,206 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:38:44,206 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:38:44,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:38:44,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:38:44,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:38:44,207 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:38:44,207 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:38:44,207 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:38:44,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:38:44,208 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:38:44,208 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:38:44,208 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:38:44,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:38:44,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:38:44,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:38:44,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:38:44,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:38:44,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:38:44,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:38:44,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:38:44,212 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_862ad59d-e85e-4ddd-ad43-917df9b57ac2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2022-11-18 19:38:44,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:38:44,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:38:44,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:38:44,624 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:38:44,626 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:38:44,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2022-11-18 19:38:44,699 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/data/aa0eb1b9f/c24bd0094ef542188c5c0eb1e4fd677e/FLAGcec9598da [2022-11-18 19:38:45,391 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:38:45,392 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2022-11-18 19:38:45,415 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/data/aa0eb1b9f/c24bd0094ef542188c5c0eb1e4fd677e/FLAGcec9598da [2022-11-18 19:38:45,598 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/data/aa0eb1b9f/c24bd0094ef542188c5c0eb1e4fd677e [2022-11-18 19:38:45,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:38:45,605 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:38:45,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:38:45,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:38:45,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:38:45,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:38:45" (1/1) ... [2022-11-18 19:38:45,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a486ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:45, skipping insertion in model container [2022-11-18 19:38:45,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:38:45" (1/1) ... [2022-11-18 19:38:45,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:38:45,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:38:46,007 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-11-18 19:38:46,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:38:46,537 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:38:46,558 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-11-18 19:38:46,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:38:46,692 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:38:46,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:46 WrapperNode [2022-11-18 19:38:46,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:38:46,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:38:46,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:38:46,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:38:46,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:46" (1/1) ... [2022-11-18 19:38:46,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:46" (1/1) ... [2022-11-18 19:38:46,750 INFO L138 Inliner]: procedures = 364, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2022-11-18 19:38:46,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:38:46,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:38:46,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:38:46,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:38:46,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:46" (1/1) ... [2022-11-18 19:38:46,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:46" (1/1) ... [2022-11-18 19:38:46,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:46" (1/1) ... [2022-11-18 19:38:46,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:46" (1/1) ... [2022-11-18 19:38:46,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:46" (1/1) ... [2022-11-18 19:38:46,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:46" (1/1) ... [2022-11-18 19:38:46,797 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:46" (1/1) ... [2022-11-18 19:38:46,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:46" (1/1) ... [2022-11-18 19:38:46,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:38:46,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:38:46,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:38:46,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:38:46,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:46" (1/1) ... [2022-11-18 19:38:46,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:38:46,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:46,835 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:38:46,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:38:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:38:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:38:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:38:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:38:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 19:38:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:38:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2022-11-18 19:38:46,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2022-11-18 19:38:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:38:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:38:46,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:38:46,880 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 19:38:47,028 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:38:47,030 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:38:47,430 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:38:47,449 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:38:47,450 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 19:38:47,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:38:47 BoogieIcfgContainer [2022-11-18 19:38:47,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:38:47,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:38:47,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:38:47,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:38:47,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:38:45" (1/3) ... [2022-11-18 19:38:47,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124f6996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:38:47, skipping insertion in model container [2022-11-18 19:38:47,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:46" (2/3) ... [2022-11-18 19:38:47,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124f6996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:38:47, skipping insertion in model container [2022-11-18 19:38:47,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:38:47" (3/3) ... [2022-11-18 19:38:47,463 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2022-11-18 19:38:47,506 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:38:47,507 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-18 19:38:47,507 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:38:47,617 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 19:38:47,675 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 19:38:47,695 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 100 transitions, 208 flow [2022-11-18 19:38:47,701 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 100 transitions, 208 flow [2022-11-18 19:38:47,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 100 transitions, 208 flow [2022-11-18 19:38:47,759 INFO L130 PetriNetUnfolder]: 7/99 cut-off events. [2022-11-18 19:38:47,759 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 19:38:47,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 99 events. 7/99 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 104 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2022-11-18 19:38:47,766 INFO L119 LiptonReduction]: Number of co-enabled transitions 798 [2022-11-18 19:38:51,123 INFO L134 LiptonReduction]: Checked pairs total: 1058 [2022-11-18 19:38:51,124 INFO L136 LiptonReduction]: Total number of compositions: 101 [2022-11-18 19:38:51,132 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 22 transitions, 52 flow [2022-11-18 19:38:51,144 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 49 states, 43 states have (on average 2.116279069767442) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 19:38:51,162 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:38:51,168 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;@e8effab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:38:51,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-18 19:38:51,171 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 43 states have (on average 2.116279069767442) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 19:38:51,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-18 19:38:51,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:51,176 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-18 19:38:51,177 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:38:51,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:51,182 INFO L85 PathProgramCache]: Analyzing trace with hash 383, now seen corresponding path program 1 times [2022-11-18 19:38:51,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:51,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534237597] [2022-11-18 19:38:51,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:51,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:51,321 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 19:38:51,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:51,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534237597] [2022-11-18 19:38:51,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534237597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:51,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:51,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-18 19:38:51,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429230686] [2022-11-18 19:38:51,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:51,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:38:51,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:51,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:38:51,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:38:51,380 INFO L87 Difference]: Start difference. First operand has 49 states, 43 states have (on average 2.116279069767442) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 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 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states 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 19:38:51,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:51,429 INFO L93 Difference]: Finished difference Result 46 states and 88 transitions. [2022-11-18 19:38:51,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:38:51,432 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2022-11-18 19:38:51,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:51,441 INFO L225 Difference]: With dead ends: 46 [2022-11-18 19:38:51,441 INFO L226 Difference]: Without dead ends: 46 [2022-11-18 19:38:51,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 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 19:38:51,447 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:51,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:38:51,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-18 19:38:51,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-18 19:38:51,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 2.046511627906977) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:38:51,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 88 transitions. [2022-11-18 19:38:51,505 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 88 transitions. Word has length 1 [2022-11-18 19:38:51,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:51,505 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 88 transitions. [2022-11-18 19:38:51,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states 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 19:38:51,508 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 88 transitions. [2022-11-18 19:38:51,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-18 19:38:51,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:51,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-18 19:38:51,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:38:51,511 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:38:51,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:51,513 INFO L85 PathProgramCache]: Analyzing trace with hash 11722478, now seen corresponding path program 1 times [2022-11-18 19:38:51,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:51,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733644849] [2022-11-18 19:38:51,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:51,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:51,684 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 19:38:51,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:51,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733644849] [2022-11-18 19:38:51,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733644849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:51,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:51,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:38:51,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915378436] [2022-11-18 19:38:51,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:51,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:38:51,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:51,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:38:51,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:38:51,690 INFO L87 Difference]: Start difference. First operand 46 states and 88 transitions. Second operand has 3 states, 2 states have (on average 2.0) 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 19:38:51,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:51,759 INFO L93 Difference]: Finished difference Result 64 states and 124 transitions. [2022-11-18 19:38:51,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:38:51,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) 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 4 [2022-11-18 19:38:51,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:51,762 INFO L225 Difference]: With dead ends: 64 [2022-11-18 19:38:51,763 INFO L226 Difference]: Without dead ends: 64 [2022-11-18 19:38:51,763 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 19:38:51,765 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 8 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:51,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:38:51,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-18 19:38:51,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2022-11-18 19:38:51,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 2.0408163265306123) internal successors, (100), 51 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 19:38:51,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 100 transitions. [2022-11-18 19:38:51,775 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 100 transitions. Word has length 4 [2022-11-18 19:38:51,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:51,776 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 100 transitions. [2022-11-18 19:38:51,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) 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 19:38:51,777 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 100 transitions. [2022-11-18 19:38:51,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 19:38:51,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:51,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:51,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:38:51,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:38:51,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:51,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1331614734, now seen corresponding path program 1 times [2022-11-18 19:38:51,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:51,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498773843] [2022-11-18 19:38:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:51,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:51,897 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 19:38:51,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:51,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498773843] [2022-11-18 19:38:51,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498773843] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:38:51,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454134558] [2022-11-18 19:38:51,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:51,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:51,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:51,903 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:51,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:38:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:52,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:38:52,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:52,083 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 19:38:52,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:52,106 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 19:38:52,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454134558] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:38:52,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:38:52,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-18 19:38:52,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657222429] [2022-11-18 19:38:52,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:52,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:38:52,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:52,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:38:52,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:38:52,110 INFO L87 Difference]: Start difference. First operand 52 states and 100 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:52,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:52,242 INFO L93 Difference]: Finished difference Result 106 states and 208 transitions. [2022-11-18 19:38:52,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:38:52,242 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 19:38:52,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:52,244 INFO L225 Difference]: With dead ends: 106 [2022-11-18 19:38:52,244 INFO L226 Difference]: Without dead ends: 106 [2022-11-18 19:38:52,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 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 19:38:52,246 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 48 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:52,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 5 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:38:52,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-18 19:38:52,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-11-18 19:38:52,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 103 states have (on average 2.0194174757281553) internal successors, (208), 105 states have internal predecessors, (208), 0 states have call successors, (0), 0 states 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 19:38:52,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 208 transitions. [2022-11-18 19:38:52,259 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 208 transitions. Word has length 7 [2022-11-18 19:38:52,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:52,260 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 208 transitions. [2022-11-18 19:38:52,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:52,260 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 208 transitions. [2022-11-18 19:38:52,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:38:52,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:52,262 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1] [2022-11-18 19:38:52,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:52,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-18 19:38:52,469 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:38:52,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:52,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1773226258, now seen corresponding path program 2 times [2022-11-18 19:38:52,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:52,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466485816] [2022-11-18 19:38:52,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:52,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:52,781 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:52,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:52,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466485816] [2022-11-18 19:38:52,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466485816] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:38:52,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749728958] [2022-11-18 19:38:52,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:38:52,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:52,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:52,786 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:52,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:38:52,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:38:52,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:38:52,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:38:52,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:52,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:38:53,032 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:38:53,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:53,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749728958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:53,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:38:53,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-11-18 19:38:53,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851348689] [2022-11-18 19:38:53,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:53,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:38:53,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:53,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:38:53,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:38:53,040 INFO L87 Difference]: Start difference. First operand 106 states and 208 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:53,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:53,083 INFO L93 Difference]: Finished difference Result 100 states and 196 transitions. [2022-11-18 19:38:53,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:38:53,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:38:53,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:53,085 INFO L225 Difference]: With dead ends: 100 [2022-11-18 19:38:53,086 INFO L226 Difference]: Without dead ends: 100 [2022-11-18 19:38:53,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:38:53,087 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:53,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:38:53,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-18 19:38:53,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-18 19:38:53,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 98 states have (on average 2.0) internal successors, (196), 99 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 19:38:53,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 196 transitions. [2022-11-18 19:38:53,117 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 196 transitions. Word has length 16 [2022-11-18 19:38:53,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:53,119 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 196 transitions. [2022-11-18 19:38:53,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:53,119 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 196 transitions. [2022-11-18 19:38:53,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:38:53,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:53,121 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1] [2022-11-18 19:38:53,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:53,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:53,331 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:38:53,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:53,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1773226257, now seen corresponding path program 1 times [2022-11-18 19:38:53,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:53,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076158738] [2022-11-18 19:38:53,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:53,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:53,540 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:53,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:53,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076158738] [2022-11-18 19:38:53,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076158738] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:38:53,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741464991] [2022-11-18 19:38:53,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:53,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:53,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:53,547 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:53,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:38:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:53,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:38:53,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:53,707 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:53,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:53,802 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:53,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741464991] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:38:53,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:38:53,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-18 19:38:53,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718282132] [2022-11-18 19:38:53,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:53,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:38:53,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:53,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:38:53,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:38:53,807 INFO L87 Difference]: Start difference. First operand 100 states and 196 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:54,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:54,056 INFO L93 Difference]: Finished difference Result 208 states and 412 transitions. [2022-11-18 19:38:54,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:38:54,057 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:38:54,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:54,065 INFO L225 Difference]: With dead ends: 208 [2022-11-18 19:38:54,066 INFO L226 Difference]: Without dead ends: 208 [2022-11-18 19:38:54,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 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 19:38:54,073 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 170 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:54,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 10 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:38:54,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-18 19:38:54,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-11-18 19:38:54,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 206 states have (on average 2.0) internal successors, (412), 207 states have internal predecessors, (412), 0 states have call successors, (0), 0 states 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 19:38:54,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 412 transitions. [2022-11-18 19:38:54,097 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 412 transitions. Word has length 16 [2022-11-18 19:38:54,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:54,098 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 412 transitions. [2022-11-18 19:38:54,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:54,098 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 412 transitions. [2022-11-18 19:38:54,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-18 19:38:54,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:54,101 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1] [2022-11-18 19:38:54,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 19:38:54,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:54,307 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:38:54,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:54,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1427047697, now seen corresponding path program 2 times [2022-11-18 19:38:54,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:54,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867595757] [2022-11-18 19:38:54,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:54,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:54,762 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:54,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:54,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867595757] [2022-11-18 19:38:54,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867595757] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:38:54,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274841578] [2022-11-18 19:38:54,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:38:54,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:54,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:54,765 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:54,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:38:54,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:38:54,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:38:54,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:38:54,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:54,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:38:55,120 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-18 19:38:55,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:55,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274841578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:55,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:38:55,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [12] total 13 [2022-11-18 19:38:55,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691266941] [2022-11-18 19:38:55,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:55,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:38:55,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:55,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:38:55,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:38:55,123 INFO L87 Difference]: Start difference. First operand 208 states and 412 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:55,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:55,153 INFO L93 Difference]: Finished difference Result 202 states and 400 transitions. [2022-11-18 19:38:55,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:38:55,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-18 19:38:55,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:55,156 INFO L225 Difference]: With dead ends: 202 [2022-11-18 19:38:55,156 INFO L226 Difference]: Without dead ends: 202 [2022-11-18 19:38:55,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:38:55,157 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:55,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:38:55,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-18 19:38:55,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2022-11-18 19:38:55,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.9900497512437811) internal successors, (400), 201 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 19:38:55,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 400 transitions. [2022-11-18 19:38:55,174 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 400 transitions. Word has length 34 [2022-11-18 19:38:55,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:55,175 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 400 transitions. [2022-11-18 19:38:55,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:55,175 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 400 transitions. [2022-11-18 19:38:55,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-18 19:38:55,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:55,178 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:55,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:55,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 19:38:55,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:38:55,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:55,387 INFO L85 PathProgramCache]: Analyzing trace with hash -2088426705, now seen corresponding path program 1 times [2022-11-18 19:38:55,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:55,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452433350] [2022-11-18 19:38:55,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:55,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-18 19:38:55,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:55,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452433350] [2022-11-18 19:38:55,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452433350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:55,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:55,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:38:55,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293031668] [2022-11-18 19:38:55,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:55,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:38:55,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:55,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:38:55,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:38:55,502 INFO L87 Difference]: Start difference. First operand 202 states and 400 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:55,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:55,539 INFO L93 Difference]: Finished difference Result 334 states and 664 transitions. [2022-11-18 19:38:55,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:38:55,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-11-18 19:38:55,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:55,542 INFO L225 Difference]: With dead ends: 334 [2022-11-18 19:38:55,542 INFO L226 Difference]: Without dead ends: 334 [2022-11-18 19:38:55,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:38:55,543 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:55,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:38:55,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-11-18 19:38:55,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 235. [2022-11-18 19:38:55,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.9914529914529915) internal successors, (466), 234 states have internal predecessors, (466), 0 states have call successors, (0), 0 states 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 19:38:55,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 466 transitions. [2022-11-18 19:38:55,558 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 466 transitions. Word has length 38 [2022-11-18 19:38:55,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:55,558 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 466 transitions. [2022-11-18 19:38:55,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:55,559 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 466 transitions. [2022-11-18 19:38:55,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 19:38:55,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:55,561 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:55,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:38:55,562 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:38:55,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:55,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1083963708, now seen corresponding path program 1 times [2022-11-18 19:38:55,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:55,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2841054] [2022-11-18 19:38:55,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:55,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:55,665 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-18 19:38:55,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:55,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2841054] [2022-11-18 19:38:55,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2841054] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:38:55,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944625032] [2022-11-18 19:38:55,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:55,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:55,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:55,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:55,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:38:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:55,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:38:55,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:56,052 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:38:56,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:38:56,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944625032] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:38:56,390 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:38:56,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 24 [2022-11-18 19:38:56,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239992229] [2022-11-18 19:38:56,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:56,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 19:38:56,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:56,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 19:38:56,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552 [2022-11-18 19:38:56,394 INFO L87 Difference]: Start difference. First operand 235 states and 466 transitions. Second operand has 24 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 24 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 19:38:57,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:57,781 INFO L93 Difference]: Finished difference Result 886 states and 1768 transitions. [2022-11-18 19:38:57,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-18 19:38:57,782 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 24 states have internal predecessors, (82), 0 states have call successors, (0), 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 42 [2022-11-18 19:38:57,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:57,788 INFO L225 Difference]: With dead ends: 886 [2022-11-18 19:38:57,788 INFO L226 Difference]: Without dead ends: 886 [2022-11-18 19:38:57,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1386, Invalid=2646, Unknown=0, NotChecked=0, Total=4032 [2022-11-18 19:38:57,792 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1243 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:57,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1243 Valid, 42 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:38:57,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2022-11-18 19:38:57,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 697. [2022-11-18 19:38:57,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 1.9971264367816093) internal successors, (1390), 696 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states 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 19:38:57,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1390 transitions. [2022-11-18 19:38:57,825 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1390 transitions. Word has length 42 [2022-11-18 19:38:57,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:57,826 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 1390 transitions. [2022-11-18 19:38:57,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 24 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 19:38:57,827 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1390 transitions. [2022-11-18 19:38:57,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-18 19:38:57,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:57,841 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:57,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:58,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:58,059 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:38:58,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:58,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1877613769, now seen corresponding path program 2 times [2022-11-18 19:38:58,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:58,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103958870] [2022-11-18 19:38:58,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:58,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-11-18 19:38:58,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:58,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103958870] [2022-11-18 19:38:58,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103958870] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:38:58,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211471219] [2022-11-18 19:38:58,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:38:58,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:58,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:58,273 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:58,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:38:58,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:38:58,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:38:58,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:38:58,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:58,520 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-11-18 19:38:58,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:58,582 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-11-18 19:38:58,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211471219] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:38:58,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:38:58,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-18 19:38:58,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292258928] [2022-11-18 19:38:58,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:58,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:38:58,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:58,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:38:58,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:38:58,585 INFO L87 Difference]: Start difference. First operand 697 states and 1390 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:58,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:58,701 INFO L93 Difference]: Finished difference Result 1705 states and 3406 transitions. [2022-11-18 19:38:58,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:38:58,701 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-18 19:38:58,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:58,710 INFO L225 Difference]: With dead ends: 1705 [2022-11-18 19:38:58,711 INFO L226 Difference]: Without dead ends: 1705 [2022-11-18 19:38:58,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:38:58,712 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 112 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:58,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 8 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:38:58,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2022-11-18 19:38:58,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1705. [2022-11-18 19:38:58,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1704 states have (on average 1.9988262910798122) internal successors, (3406), 1704 states have internal predecessors, (3406), 0 states have call successors, (0), 0 states 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 19:38:58,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 3406 transitions. [2022-11-18 19:38:58,785 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 3406 transitions. Word has length 76 [2022-11-18 19:38:58,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:58,786 INFO L495 AbstractCegarLoop]: Abstraction has 1705 states and 3406 transitions. [2022-11-18 19:38:58,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:58,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 3406 transitions. [2022-11-18 19:38:58,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-18 19:38:58,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:58,793 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:58,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:59,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:59,001 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:38:59,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:59,002 INFO L85 PathProgramCache]: Analyzing trace with hash 572074493, now seen corresponding path program 3 times [2022-11-18 19:38:59,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:59,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900305983] [2022-11-18 19:38:59,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:59,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-11-18 19:38:59,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:59,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900305983] [2022-11-18 19:38:59,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900305983] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:38:59,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051345023] [2022-11-18 19:38:59,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:38:59,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:59,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:59,424 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:59,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:38:59,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-18 19:38:59,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:38:59,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:38:59,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-11-18 19:38:59,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:59,985 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-11-18 19:38:59,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051345023] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:38:59,985 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:38:59,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-11-18 19:38:59,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742504158] [2022-11-18 19:38:59,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:59,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:38:59,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:59,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:38:59,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:38:59,991 INFO L87 Difference]: Start difference. First operand 1705 states and 3406 transitions. Second operand has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 19:39:00,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:00,241 INFO L93 Difference]: Finished difference Result 3721 states and 7438 transitions. [2022-11-18 19:39:00,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:39:00,242 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 0 states have call successors, (0), 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 92 [2022-11-18 19:39:00,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:00,260 INFO L225 Difference]: With dead ends: 3721 [2022-11-18 19:39:00,261 INFO L226 Difference]: Without dead ends: 3721 [2022-11-18 19:39:00,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:39:00,262 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 202 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:00,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 19 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:39:00,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3721 states. [2022-11-18 19:39:00,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3721 to 3721. [2022-11-18 19:39:00,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3721 states, 3720 states have (on average 1.999462365591398) internal successors, (7438), 3720 states have internal predecessors, (7438), 0 states have call successors, (0), 0 states 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 19:39:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 7438 transitions. [2022-11-18 19:39:00,382 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 7438 transitions. Word has length 92 [2022-11-18 19:39:00,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:00,384 INFO L495 AbstractCegarLoop]: Abstraction has 3721 states and 7438 transitions. [2022-11-18 19:39:00,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 19:39:00,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 7438 transitions. [2022-11-18 19:39:00,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:39:00,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:00,401 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:00,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:00,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:00,609 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:39:00,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:00,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1402768485, now seen corresponding path program 4 times [2022-11-18 19:39:00,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:00,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149411230] [2022-11-18 19:39:00,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:00,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-11-18 19:39:01,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:01,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149411230] [2022-11-18 19:39:01,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149411230] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:39:01,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663218316] [2022-11-18 19:39:01,568 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:39:01,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:01,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:01,569 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:01,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:39:03,321 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:39:03,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:39:03,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:39:03,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:03,468 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-11-18 19:39:03,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:39:03,852 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-11-18 19:39:03,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663218316] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:39:03,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:39:03,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-18 19:39:03,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877262582] [2022-11-18 19:39:03,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:39:03,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:39:03,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:03,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:39:03,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:39:03,856 INFO L87 Difference]: Start difference. First operand 3721 states and 7438 transitions. Second operand has 23 states, 23 states have (on average 4.086956521739131) internal successors, (94), 23 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 19:39:04,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:04,248 INFO L93 Difference]: Finished difference Result 5233 states and 10462 transitions. [2022-11-18 19:39:04,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:39:04,249 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.086956521739131) internal successors, (94), 23 states have internal predecessors, (94), 0 states have call successors, (0), 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 124 [2022-11-18 19:39:04,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:04,275 INFO L225 Difference]: With dead ends: 5233 [2022-11-18 19:39:04,275 INFO L226 Difference]: Without dead ends: 5233 [2022-11-18 19:39:04,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 232 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:39:04,277 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 275 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:04,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 27 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:39:04,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5233 states. [2022-11-18 19:39:04,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5233 to 5233. [2022-11-18 19:39:04,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 1.9996177370030581) internal successors, (10462), 5232 states have internal predecessors, (10462), 0 states have call successors, (0), 0 states 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 19:39:04,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 10462 transitions. [2022-11-18 19:39:04,465 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 10462 transitions. Word has length 124 [2022-11-18 19:39:04,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:04,466 INFO L495 AbstractCegarLoop]: Abstraction has 5233 states and 10462 transitions. [2022-11-18 19:39:04,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.086956521739131) internal successors, (94), 23 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 19:39:04,467 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 10462 transitions. [2022-11-18 19:39:04,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 19:39:04,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:04,481 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:04,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:04,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 19:39:04,689 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:39:04,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:04,689 INFO L85 PathProgramCache]: Analyzing trace with hash -338512589, now seen corresponding path program 5 times [2022-11-18 19:39:04,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:04,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536343013] [2022-11-18 19:39:04,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:04,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:10,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:10,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:10,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536343013] [2022-11-18 19:39:10,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536343013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:39:10,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695078733] [2022-11-18 19:39:10,532 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:39:10,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:10,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:10,536 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:10,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:39:11,225 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-11-18 19:39:11,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:39:11,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-18 19:39:11,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:11,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:11,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:39:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:12,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695078733] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:39:12,739 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:39:12,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-18 19:39:12,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736151863] [2022-11-18 19:39:12,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:39:12,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-18 19:39:12,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:12,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-18 19:39:12,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 19:39:12,743 INFO L87 Difference]: Start difference. First operand 5233 states and 10462 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:40:23,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:23,393 INFO L93 Difference]: Finished difference Result 34250 states and 68495 transitions. [2022-11-18 19:40:23,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 293 states. [2022-11-18 19:40:23,394 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-18 19:40:23,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:23,540 INFO L225 Difference]: With dead ends: 34250 [2022-11-18 19:40:23,540 INFO L226 Difference]: Without dead ends: 34248 [2022-11-18 19:40:23,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 289 SyntacticMatches, 5 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26335 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=1043, Invalid=84513, Unknown=0, NotChecked=0, Total=85556 [2022-11-18 19:40:23,557 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1619 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 124726 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 124993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 124726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:23,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 0 Invalid, 124993 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [267 Valid, 124726 Invalid, 0 Unknown, 0 Unchecked, 58.8s Time] [2022-11-18 19:40:23,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34248 states. [2022-11-18 19:40:24,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34248 to 5485. [2022-11-18 19:40:24,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5485 states, 5484 states have (on average 2.014040846097739) internal successors, (11045), 5484 states have internal predecessors, (11045), 0 states have call successors, (0), 0 states 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 19:40:24,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5485 states to 5485 states and 11045 transitions. [2022-11-18 19:40:24,156 INFO L78 Accepts]: Start accepts. Automaton has 5485 states and 11045 transitions. Word has length 148 [2022-11-18 19:40:24,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:24,157 INFO L495 AbstractCegarLoop]: Abstraction has 5485 states and 11045 transitions. [2022-11-18 19:40:24,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:40:24,158 INFO L276 IsEmpty]: Start isEmpty. Operand 5485 states and 11045 transitions. [2022-11-18 19:40:24,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 19:40:24,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:24,173 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:24,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-18 19:40:24,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:24,381 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:40:24,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:24,382 INFO L85 PathProgramCache]: Analyzing trace with hash 676005027, now seen corresponding path program 6 times [2022-11-18 19:40:24,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:24,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952869044] [2022-11-18 19:40:24,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:24,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:24,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 1292 trivial. 0 not checked. [2022-11-18 19:40:24,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:24,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952869044] [2022-11-18 19:40:24,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952869044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:24,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:24,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:40:24,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108780821] [2022-11-18 19:40:24,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:24,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:40:24,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:24,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:40:24,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:40:24,856 INFO L87 Difference]: Start difference. First operand 5485 states and 11045 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:24,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:24,905 INFO L93 Difference]: Finished difference Result 2945 states and 3782 transitions. [2022-11-18 19:40:24,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:40:24,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-11-18 19:40:24,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:24,922 INFO L225 Difference]: With dead ends: 2945 [2022-11-18 19:40:24,923 INFO L226 Difference]: Without dead ends: 2945 [2022-11-18 19:40:24,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:40:24,925 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:24,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:40:24,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2022-11-18 19:40:24,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 2924. [2022-11-18 19:40:25,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2923 states have (on average 1.2863496407800206) internal successors, (3760), 2923 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states 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 19:40:25,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 3760 transitions. [2022-11-18 19:40:25,031 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 3760 transitions. Word has length 148 [2022-11-18 19:40:25,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:25,031 INFO L495 AbstractCegarLoop]: Abstraction has 2924 states and 3760 transitions. [2022-11-18 19:40:25,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:25,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 3760 transitions. [2022-11-18 19:40:25,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 19:40:25,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:25,041 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:25,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:40:25,043 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:40:25,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:25,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1079376283, now seen corresponding path program 7 times [2022-11-18 19:40:25,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:25,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510277976] [2022-11-18 19:40:25,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:25,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:30,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:30,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:30,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510277976] [2022-11-18 19:40:30,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510277976] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:40:30,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615961438] [2022-11-18 19:40:30,787 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:40:30,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:30,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:30,789 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:30,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:40:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:31,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-18 19:40:31,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:31,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:32,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:32,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615961438] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:40:32,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:40:32,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-18 19:40:32,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617809149] [2022-11-18 19:40:32,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:40:32,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-18 19:40:32,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:32,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-18 19:40:32,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 19:40:32,827 INFO L87 Difference]: Start difference. First operand 2924 states and 3760 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:41:25,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:25,256 INFO L93 Difference]: Finished difference Result 14168 states and 20770 transitions. [2022-11-18 19:41:25,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 252 states. [2022-11-18 19:41:25,257 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-18 19:41:25,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:25,295 INFO L225 Difference]: With dead ends: 14168 [2022-11-18 19:41:25,295 INFO L226 Difference]: Without dead ends: 14166 [2022-11-18 19:41:25,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 289 SyntacticMatches, 5 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18145 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=887, Invalid=63375, Unknown=0, NotChecked=0, Total=64262 [2022-11-18 19:41:25,304 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1199 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 87463 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 87501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 87463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:25,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1199 Valid, 0 Invalid, 87501 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [38 Valid, 87463 Invalid, 0 Unknown, 0 Unchecked, 42.8s Time] [2022-11-18 19:41:25,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14166 states. [2022-11-18 19:41:25,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14166 to 2927. [2022-11-18 19:41:25,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2927 states, 2926 states have (on average 1.2863978127136022) internal successors, (3764), 2926 states have internal predecessors, (3764), 0 states have call successors, (0), 0 states 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 19:41:25,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 3764 transitions. [2022-11-18 19:41:25,473 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 3764 transitions. Word has length 148 [2022-11-18 19:41:25,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:25,473 INFO L495 AbstractCegarLoop]: Abstraction has 2927 states and 3764 transitions. [2022-11-18 19:41:25,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:41:25,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 3764 transitions. [2022-11-18 19:41:25,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 19:41:25,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:25,482 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:25,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:25,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 19:41:25,690 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:41:25,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:25,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1908798565, now seen corresponding path program 8 times [2022-11-18 19:41:25,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:25,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931103702] [2022-11-18 19:41:25,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:25,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:30,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:30,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:30,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931103702] [2022-11-18 19:41:30,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931103702] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:30,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127004287] [2022-11-18 19:41:30,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:41:30,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:30,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:30,972 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:30,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:41:31,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:41:31,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:31,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-18 19:41:31,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:32,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:32,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:32,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:32,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127004287] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:32,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:32,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-18 19:41:32,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977888776] [2022-11-18 19:41:32,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:32,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-18 19:41:32,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:32,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-18 19:41:32,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 19:41:32,888 INFO L87 Difference]: Start difference. First operand 2927 states and 3764 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:42:22,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:22,876 INFO L93 Difference]: Finished difference Result 14159 states and 20753 transitions. [2022-11-18 19:42:22,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2022-11-18 19:42:22,876 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-18 19:42:22,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:22,907 INFO L225 Difference]: With dead ends: 14159 [2022-11-18 19:42:22,908 INFO L226 Difference]: Without dead ends: 14157 [2022-11-18 19:42:22,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 289 SyntacticMatches, 5 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18528 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=895, Invalid=64385, Unknown=0, NotChecked=0, Total=65280 [2022-11-18 19:42:22,913 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1209 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 88184 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 88222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 88184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:22,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1209 Valid, 0 Invalid, 88222 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [38 Valid, 88184 Invalid, 0 Unknown, 0 Unchecked, 40.6s Time] [2022-11-18 19:42:22,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14157 states. [2022-11-18 19:42:23,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14157 to 2933. [2022-11-18 19:42:23,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2933 states, 2932 states have (on average 1.2861527967257844) internal successors, (3771), 2932 states have internal predecessors, (3771), 0 states have call successors, (0), 0 states 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 19:42:23,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2933 states to 2933 states and 3771 transitions. [2022-11-18 19:42:23,062 INFO L78 Accepts]: Start accepts. Automaton has 2933 states and 3771 transitions. Word has length 148 [2022-11-18 19:42:23,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:23,062 INFO L495 AbstractCegarLoop]: Abstraction has 2933 states and 3771 transitions. [2022-11-18 19:42:23,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:42:23,063 INFO L276 IsEmpty]: Start isEmpty. Operand 2933 states and 3771 transitions. [2022-11-18 19:42:23,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 19:42:23,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:23,070 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:23,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:23,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:42:23,278 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:42:23,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:23,278 INFO L85 PathProgramCache]: Analyzing trace with hash 2064179813, now seen corresponding path program 9 times [2022-11-18 19:42:23,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:23,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760922611] [2022-11-18 19:42:23,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:23,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:27,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:27,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:27,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760922611] [2022-11-18 19:42:27,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760922611] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:27,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802219481] [2022-11-18 19:42:27,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:42:27,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:27,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:27,540 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:27,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:42:28,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2022-11-18 19:42:28,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:28,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-18 19:42:28,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:28,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:28,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:29,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802219481] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:29,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:29,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-18 19:42:29,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161974132] [2022-11-18 19:42:29,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:29,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-18 19:42:29,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:29,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-18 19:42:29,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 19:42:29,611 INFO L87 Difference]: Start difference. First operand 2933 states and 3771 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:43:14,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:14,288 INFO L93 Difference]: Finished difference Result 14156 states and 20745 transitions. [2022-11-18 19:43:14,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2022-11-18 19:43:14,289 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-18 19:43:14,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:14,314 INFO L225 Difference]: With dead ends: 14156 [2022-11-18 19:43:14,315 INFO L226 Difference]: Without dead ends: 14154 [2022-11-18 19:43:14,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 289 SyntacticMatches, 5 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18915 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=903, Invalid=65403, Unknown=0, NotChecked=0, Total=66306 [2022-11-18 19:43:14,320 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1219 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 88905 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 88943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 88905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:14,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1219 Valid, 0 Invalid, 88943 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [38 Valid, 88905 Invalid, 0 Unknown, 0 Unchecked, 36.4s Time] [2022-11-18 19:43:14,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14154 states. [2022-11-18 19:43:14,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14154 to 2939. [2022-11-18 19:43:14,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 2938 states have (on average 1.2859087814840027) internal successors, (3778), 2938 states have internal predecessors, (3778), 0 states have call successors, (0), 0 states 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 19:43:14,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 3778 transitions. [2022-11-18 19:43:14,473 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 3778 transitions. Word has length 148 [2022-11-18 19:43:14,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:14,474 INFO L495 AbstractCegarLoop]: Abstraction has 2939 states and 3778 transitions. [2022-11-18 19:43:14,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:43:14,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 3778 transitions. [2022-11-18 19:43:14,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 19:43:14,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:14,483 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:14,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:43:14,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:43:14,692 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:43:14,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:14,693 INFO L85 PathProgramCache]: Analyzing trace with hash -2030907291, now seen corresponding path program 10 times [2022-11-18 19:43:14,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:14,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966984026] [2022-11-18 19:43:14,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:14,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:19,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:19,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:19,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966984026] [2022-11-18 19:43:19,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966984026] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:19,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097233469] [2022-11-18 19:43:19,147 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:43:19,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:19,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:19,149 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:19,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:43:22,081 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:43:22,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:43:22,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-18 19:43:22,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:22,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:22,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:43:23,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:23,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097233469] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:43:23,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:43:23,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-18 19:43:23,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824610392] [2022-11-18 19:43:23,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:43:23,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-18 19:43:23,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:23,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-18 19:43:23,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 19:43:23,494 INFO L87 Difference]: Start difference. First operand 2939 states and 3778 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:44:15,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:44:15,607 INFO L93 Difference]: Finished difference Result 14157 states and 20744 transitions. [2022-11-18 19:44:15,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 258 states. [2022-11-18 19:44:15,608 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-18 19:44:15,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:44:15,628 INFO L225 Difference]: With dead ends: 14157 [2022-11-18 19:44:15,629 INFO L226 Difference]: Without dead ends: 14155 [2022-11-18 19:44:15,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 289 SyntacticMatches, 5 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19306 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=911, Invalid=66429, Unknown=0, NotChecked=0, Total=67340 [2022-11-18 19:44:15,634 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1229 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 89626 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 89664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 89626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:44:15,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 0 Invalid, 89664 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [38 Valid, 89626 Invalid, 0 Unknown, 0 Unchecked, 42.5s Time] [2022-11-18 19:44:15,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14155 states. [2022-11-18 19:44:15,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14155 to 2945. [2022-11-18 19:44:15,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2945 states, 2944 states have (on average 1.2856657608695652) internal successors, (3785), 2944 states have internal predecessors, (3785), 0 states have call successors, (0), 0 states 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 19:44:15,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2945 states to 2945 states and 3785 transitions. [2022-11-18 19:44:15,857 INFO L78 Accepts]: Start accepts. Automaton has 2945 states and 3785 transitions. Word has length 148 [2022-11-18 19:44:15,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:44:15,857 INFO L495 AbstractCegarLoop]: Abstraction has 2945 states and 3785 transitions. [2022-11-18 19:44:15,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:44:15,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2945 states and 3785 transitions. [2022-11-18 19:44:15,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 19:44:15,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:15,865 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:15,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:44:16,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:44:16,066 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:44:16,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:16,067 INFO L85 PathProgramCache]: Analyzing trace with hash 17022565, now seen corresponding path program 11 times [2022-11-18 19:44:16,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:44:16,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487926565] [2022-11-18 19:44:16,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:16,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:44:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:20,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:44:20,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:44:20,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487926565] [2022-11-18 19:44:20,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487926565] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:44:20,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666282055] [2022-11-18 19:44:20,113 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:44:20,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:44:20,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:44:20,114 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:44:20,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 19:44:20,791 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-11-18 19:44:20,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:44:20,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-18 19:44:20,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:44:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:44:21,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:44:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:44:22,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666282055] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:44:22,106 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:44:22,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-18 19:44:22,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074632119] [2022-11-18 19:44:22,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:44:22,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-18 19:44:22,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:44:22,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-18 19:44:22,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 19:44:22,113 INFO L87 Difference]: Start difference. First operand 2945 states and 3785 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:45:14,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:14,134 INFO L93 Difference]: Finished difference Result 14164 states and 20752 transitions. [2022-11-18 19:45:14,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2022-11-18 19:45:14,135 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-18 19:45:14,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:14,154 INFO L225 Difference]: With dead ends: 14164 [2022-11-18 19:45:14,154 INFO L226 Difference]: Without dead ends: 14162 [2022-11-18 19:45:14,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 289 SyntacticMatches, 5 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19701 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=919, Invalid=67463, Unknown=0, NotChecked=0, Total=68382 [2022-11-18 19:45:14,157 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1239 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 90347 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 90385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 90347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:14,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 0 Invalid, 90385 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [38 Valid, 90347 Invalid, 0 Unknown, 0 Unchecked, 42.3s Time] [2022-11-18 19:45:14,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14162 states. [2022-11-18 19:45:14,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14162 to 2951. [2022-11-18 19:45:14,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2951 states, 2950 states have (on average 1.2854237288135593) internal successors, (3792), 2950 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states 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 19:45:14,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2951 states to 2951 states and 3792 transitions. [2022-11-18 19:45:14,304 INFO L78 Accepts]: Start accepts. Automaton has 2951 states and 3792 transitions. Word has length 148 [2022-11-18 19:45:14,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:14,304 INFO L495 AbstractCegarLoop]: Abstraction has 2951 states and 3792 transitions. [2022-11-18 19:45:14,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:45:14,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 3792 transitions. [2022-11-18 19:45:14,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 19:45:14,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:14,314 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:45:14,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:45:14,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 19:45:14,523 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:45:14,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:14,523 INFO L85 PathProgramCache]: Analyzing trace with hash 347843685, now seen corresponding path program 12 times [2022-11-18 19:45:14,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:14,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228527470] [2022-11-18 19:45:14,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:14,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:18,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:18,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228527470] [2022-11-18 19:45:18,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228527470] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:45:18,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239644976] [2022-11-18 19:45:18,485 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:45:18,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:45:18,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:45:18,487 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:45:18,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 19:45:19,512 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-11-18 19:45:19,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:45:19,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-18 19:45:19,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:45:20,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:20,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:45:20,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:20,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239644976] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:45:20,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:45:20,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-18 19:45:20,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937798864] [2022-11-18 19:45:20,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:45:20,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-18 19:45:20,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:20,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-18 19:45:20,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 19:45:20,621 INFO L87 Difference]: Start difference. First operand 2951 states and 3792 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:46:09,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:09,129 INFO L93 Difference]: Finished difference Result 14177 states and 20769 transitions. [2022-11-18 19:46:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 262 states. [2022-11-18 19:46:09,130 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-18 19:46:09,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:09,149 INFO L225 Difference]: With dead ends: 14177 [2022-11-18 19:46:09,149 INFO L226 Difference]: Without dead ends: 14175 [2022-11-18 19:46:09,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 289 SyntacticMatches, 5 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20100 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=927, Invalid=68505, Unknown=0, NotChecked=0, Total=69432 [2022-11-18 19:46:09,152 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1249 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 91068 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 91106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 91068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:46:09,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 0 Invalid, 91106 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [38 Valid, 91068 Invalid, 0 Unknown, 0 Unchecked, 39.6s Time] [2022-11-18 19:46:09,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14175 states. [2022-11-18 19:46:09,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14175 to 2957. [2022-11-18 19:46:09,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2957 states, 2956 states have (on average 1.2851826792963463) internal successors, (3799), 2956 states have internal predecessors, (3799), 0 states have call successors, (0), 0 states 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 19:46:09,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2957 states to 2957 states and 3799 transitions. [2022-11-18 19:46:09,368 INFO L78 Accepts]: Start accepts. Automaton has 2957 states and 3799 transitions. Word has length 148 [2022-11-18 19:46:09,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:09,368 INFO L495 AbstractCegarLoop]: Abstraction has 2957 states and 3799 transitions. [2022-11-18 19:46:09,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:46:09,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2957 states and 3799 transitions. [2022-11-18 19:46:09,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 19:46:09,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:09,377 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:09,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:09,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:09,588 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:46:09,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:09,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1382376859, now seen corresponding path program 13 times [2022-11-18 19:46:09,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:09,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134394648] [2022-11-18 19:46:09,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:09,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:13,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:13,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:13,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134394648] [2022-11-18 19:46:13,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134394648] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:13,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689333659] [2022-11-18 19:46:13,496 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:46:13,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:13,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:13,497 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:13,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 19:46:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:13,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-18 19:46:13,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:14,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:14,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:15,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:15,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689333659] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:15,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:46:15,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-18 19:46:15,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013754491] [2022-11-18 19:46:15,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:15,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-18 19:46:15,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:15,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-18 19:46:15,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 19:46:15,289 INFO L87 Difference]: Start difference. First operand 2957 states and 3799 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:47:07,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:47:07,389 INFO L93 Difference]: Finished difference Result 14196 states and 20795 transitions. [2022-11-18 19:47:07,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 264 states. [2022-11-18 19:47:07,390 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-18 19:47:07,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:47:07,408 INFO L225 Difference]: With dead ends: 14196 [2022-11-18 19:47:07,408 INFO L226 Difference]: Without dead ends: 14194 [2022-11-18 19:47:07,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 289 SyntacticMatches, 5 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20503 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=935, Invalid=69555, Unknown=0, NotChecked=0, Total=70490 [2022-11-18 19:47:07,412 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1259 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 91789 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 91827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 91789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:47:07,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1259 Valid, 0 Invalid, 91827 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [38 Valid, 91789 Invalid, 0 Unknown, 0 Unchecked, 42.4s Time] [2022-11-18 19:47:07,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14194 states. [2022-11-18 19:47:07,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14194 to 2963. [2022-11-18 19:47:07,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2963 states, 2962 states have (on average 1.2849426063470628) internal successors, (3806), 2962 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states 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 19:47:07,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2963 states to 2963 states and 3806 transitions. [2022-11-18 19:47:07,583 INFO L78 Accepts]: Start accepts. Automaton has 2963 states and 3806 transitions. Word has length 148 [2022-11-18 19:47:07,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:47:07,584 INFO L495 AbstractCegarLoop]: Abstraction has 2963 states and 3806 transitions. [2022-11-18 19:47:07,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:47:07,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2963 states and 3806 transitions. [2022-11-18 19:47:07,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 19:47:07,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:47:07,592 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:07,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:07,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:07,800 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:47:07,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:07,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1998620773, now seen corresponding path program 14 times [2022-11-18 19:47:07,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:07,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461152276] [2022-11-18 19:47:07,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:07,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:11,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:11,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:11,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461152276] [2022-11-18 19:47:11,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461152276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:11,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336582356] [2022-11-18 19:47:11,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:47:11,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:11,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:11,468 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:11,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 19:47:11,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:47:11,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:47:11,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-18 19:47:11,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:12,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:12,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:13,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:13,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336582356] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:47:13,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:47:13,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-18 19:47:13,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938296405] [2022-11-18 19:47:13,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:47:13,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-18 19:47:13,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:13,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-18 19:47:13,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 19:47:13,162 INFO L87 Difference]: Start difference. First operand 2963 states and 3806 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:48:04,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:48:04,932 INFO L93 Difference]: Finished difference Result 14221 states and 20830 transitions. [2022-11-18 19:48:04,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 266 states. [2022-11-18 19:48:04,933 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-18 19:48:04,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:48:04,952 INFO L225 Difference]: With dead ends: 14221 [2022-11-18 19:48:04,952 INFO L226 Difference]: Without dead ends: 14219 [2022-11-18 19:48:04,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 289 SyntacticMatches, 5 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20910 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=943, Invalid=70613, Unknown=0, NotChecked=0, Total=71556 [2022-11-18 19:48:04,956 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1269 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 92510 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 92548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 92510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:48:04,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 0 Invalid, 92548 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [38 Valid, 92510 Invalid, 0 Unknown, 0 Unchecked, 42.1s Time] [2022-11-18 19:48:04,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14219 states. [2022-11-18 19:48:05,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14219 to 2969. [2022-11-18 19:48:05,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2969 states, 2968 states have (on average 1.2847035040431267) internal successors, (3813), 2968 states have internal predecessors, (3813), 0 states have call successors, (0), 0 states 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 19:48:05,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 3813 transitions. [2022-11-18 19:48:05,121 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 3813 transitions. Word has length 148 [2022-11-18 19:48:05,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:48:05,122 INFO L495 AbstractCegarLoop]: Abstraction has 2969 states and 3813 transitions. [2022-11-18 19:48:05,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:48:05,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 3813 transitions. [2022-11-18 19:48:05,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 19:48:05,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:48:05,130 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:05,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 19:48:05,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-18 19:48:05,338 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:48:05,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:05,338 INFO L85 PathProgramCache]: Analyzing trace with hash -590514587, now seen corresponding path program 15 times [2022-11-18 19:48:05,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:05,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843422606] [2022-11-18 19:48:05,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:05,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:09,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:09,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:09,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843422606] [2022-11-18 19:48:09,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843422606] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:48:09,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020098514] [2022-11-18 19:48:09,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:48:09,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:48:09,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:48:09,044 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:48:09,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 19:48:10,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2022-11-18 19:48:10,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:48:10,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-18 19:48:10,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:10,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:10,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:48:11,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:11,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020098514] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:48:11,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:48:11,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-18 19:48:11,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562897912] [2022-11-18 19:48:11,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:48:11,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-18 19:48:11,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:11,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-18 19:48:11,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 19:48:11,365 INFO L87 Difference]: Start difference. First operand 2969 states and 3813 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:49:06,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:06,573 INFO L93 Difference]: Finished difference Result 14252 states and 20874 transitions. [2022-11-18 19:49:06,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 268 states. [2022-11-18 19:49:06,574 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-18 19:49:06,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:06,593 INFO L225 Difference]: With dead ends: 14252 [2022-11-18 19:49:06,593 INFO L226 Difference]: Without dead ends: 14250 [2022-11-18 19:49:06,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 289 SyntacticMatches, 5 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21321 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=951, Invalid=71679, Unknown=0, NotChecked=0, Total=72630 [2022-11-18 19:49:06,597 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1279 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 93231 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 93269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 93231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:06,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 0 Invalid, 93269 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [38 Valid, 93231 Invalid, 0 Unknown, 0 Unchecked, 44.8s Time] [2022-11-18 19:49:06,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14250 states. [2022-11-18 19:49:06,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14250 to 2975. [2022-11-18 19:49:06,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2975 states, 2974 states have (on average 1.2844653665097512) internal successors, (3820), 2974 states have internal predecessors, (3820), 0 states have call successors, (0), 0 states 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 19:49:06,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2975 states to 2975 states and 3820 transitions. [2022-11-18 19:49:06,700 INFO L78 Accepts]: Start accepts. Automaton has 2975 states and 3820 transitions. Word has length 148 [2022-11-18 19:49:06,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:06,701 INFO L495 AbstractCegarLoop]: Abstraction has 2975 states and 3820 transitions. [2022-11-18 19:49:06,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:49:06,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2975 states and 3820 transitions. [2022-11-18 19:49:06,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 19:49:06,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:06,709 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:06,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:06,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 19:49:06,919 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:49:06,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:06,919 INFO L85 PathProgramCache]: Analyzing trace with hash 169960549, now seen corresponding path program 16 times [2022-11-18 19:49:06,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:06,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318976444] [2022-11-18 19:49:06,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:06,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:10,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:10,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:10,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318976444] [2022-11-18 19:49:10,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318976444] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:10,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585613997] [2022-11-18 19:49:10,672 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:49:10,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:10,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:10,673 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:10,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 19:49:13,767 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:49:13,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:13,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-18 19:49:13,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:14,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:14,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:14,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585613997] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:14,932 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:14,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-18 19:49:14,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758014607] [2022-11-18 19:49:14,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:14,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-18 19:49:14,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:14,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-18 19:49:14,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 19:49:14,935 INFO L87 Difference]: Start difference. First operand 2975 states and 3820 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:50:09,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:09,836 INFO L93 Difference]: Finished difference Result 14289 states and 20927 transitions. [2022-11-18 19:50:09,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 270 states. [2022-11-18 19:50:09,837 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-18 19:50:09,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:09,858 INFO L225 Difference]: With dead ends: 14289 [2022-11-18 19:50:09,858 INFO L226 Difference]: Without dead ends: 14287 [2022-11-18 19:50:09,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 289 SyntacticMatches, 5 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21736 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=959, Invalid=72753, Unknown=0, NotChecked=0, Total=73712 [2022-11-18 19:50:09,862 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1289 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 93952 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 93990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 93952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:09,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 0 Invalid, 93990 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [38 Valid, 93952 Invalid, 0 Unknown, 0 Unchecked, 44.7s Time] [2022-11-18 19:50:09,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14287 states. [2022-11-18 19:50:10,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14287 to 2981. [2022-11-18 19:50:10,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2980 states have (on average 1.284228187919463) internal successors, (3827), 2980 states have internal predecessors, (3827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:10,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 3827 transitions. [2022-11-18 19:50:10,032 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 3827 transitions. Word has length 148 [2022-11-18 19:50:10,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:10,033 INFO L495 AbstractCegarLoop]: Abstraction has 2981 states and 3827 transitions. [2022-11-18 19:50:10,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:50:10,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 3827 transitions. [2022-11-18 19:50:10,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 19:50:10,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:10,040 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:10,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:10,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 19:50:10,251 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:50:10,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:10,252 INFO L85 PathProgramCache]: Analyzing trace with hash -358854043, now seen corresponding path program 17 times [2022-11-18 19:50:10,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:10,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592490077] [2022-11-18 19:50:10,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:10,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:14,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:14,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:14,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592490077] [2022-11-18 19:50:14,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592490077] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:14,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134902832] [2022-11-18 19:50:14,224 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:50:14,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:14,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:14,226 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:14,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 19:50:14,903 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-11-18 19:50:14,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:14,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-18 19:50:14,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:15,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:15,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:15,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:15,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134902832] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:15,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:15,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-18 19:50:15,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623536125] [2022-11-18 19:50:15,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:15,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-18 19:50:15,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:15,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-18 19:50:15,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 19:50:15,930 INFO L87 Difference]: Start difference. First operand 2981 states and 3827 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:51:08,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:08,787 INFO L93 Difference]: Finished difference Result 14332 states and 20989 transitions. [2022-11-18 19:51:08,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 272 states. [2022-11-18 19:51:08,788 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-18 19:51:08,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:08,816 INFO L225 Difference]: With dead ends: 14332 [2022-11-18 19:51:08,817 INFO L226 Difference]: Without dead ends: 14330 [2022-11-18 19:51:08,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 289 SyntacticMatches, 5 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22155 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=967, Invalid=73835, Unknown=0, NotChecked=0, Total=74802 [2022-11-18 19:51:08,822 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1299 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 94673 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 94711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 94673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:08,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 0 Invalid, 94711 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [38 Valid, 94673 Invalid, 0 Unknown, 0 Unchecked, 43.0s Time] [2022-11-18 19:51:08,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14330 states. [2022-11-18 19:51:08,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14330 to 2987. [2022-11-18 19:51:08,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2987 states, 2986 states have (on average 1.2839919624916276) internal successors, (3834), 2986 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states 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 19:51:08,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2987 states to 2987 states and 3834 transitions. [2022-11-18 19:51:08,966 INFO L78 Accepts]: Start accepts. Automaton has 2987 states and 3834 transitions. Word has length 148 [2022-11-18 19:51:08,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:08,967 INFO L495 AbstractCegarLoop]: Abstraction has 2987 states and 3834 transitions. [2022-11-18 19:51:08,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 19:51:08,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2987 states and 3834 transitions. [2022-11-18 19:51:08,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 19:51:08,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:08,974 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:08,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:09,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 19:51:09,184 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:51:09,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:09,185 INFO L85 PathProgramCache]: Analyzing trace with hash 700334181, now seen corresponding path program 18 times [2022-11-18 19:51:09,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:09,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675029744] [2022-11-18 19:51:09,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:09,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:12,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:12,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:12,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675029744] [2022-11-18 19:51:12,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675029744] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:12,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150155583] [2022-11-18 19:51:12,693 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:51:12,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:12,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:12,695 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:12,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862ad59d-e85e-4ddd-ad43-917df9b57ac2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 19:51:13,644 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-11-18 19:51:13,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:13,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-18 19:51:13,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:14,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:14,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:14,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:14,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150155583] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:14,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:14,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-18 19:51:14,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779431666] [2022-11-18 19:51:14,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:14,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-18 19:51:14,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:14,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-18 19:51:14,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 19:51:14,808 INFO L87 Difference]: Start difference. First operand 2987 states and 3834 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)