./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/14_spin2003.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_f5555d85-d3df-47bf-866d-ff418d3893f8/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5555d85-d3df-47bf-866d-ff418d3893f8/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_f5555d85-d3df-47bf-866d-ff418d3893f8/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5555d85-d3df-47bf-866d-ff418d3893f8/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/14_spin2003.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5555d85-d3df-47bf-866d-ff418d3893f8/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_f5555d85-d3df-47bf-866d-ff418d3893f8/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 f5ed9d077a05ec08544f0d3c902eb6b5aa6ad768c4ec69a1caaef2b54748a07e --- 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 19:49:02,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:49:02,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:49:02,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:49:02,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:49:02,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:49:02,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:49:02,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:49:02,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:49:02,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:49:02,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:49:02,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:49:02,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:49:02,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:49:02,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:49:02,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:49:02,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:49:02,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:49:02,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:49:02,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:49:02,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:49:02,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:49:02,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:49:02,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:49:02,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:49:02,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:49:02,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:49:02,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:49:02,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:49:02,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:49:02,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:49:02,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:49:02,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:49:02,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:49:02,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:49:02,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:49:02,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:49:02,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:49:02,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:49:02,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:49:02,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:49:02,423 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5555d85-d3df-47bf-866d-ff418d3893f8/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 19:49:02,461 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:49:02,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:49:02,461 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:49:02,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:49:02,463 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:49:02,463 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:49:02,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:49:02,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:49:02,467 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:49:02,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:49:02,469 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:49:02,469 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:49:02,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:49:02,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:49:02,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:49:02,471 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:49:02,471 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:49:02,471 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:49:02,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:49:02,472 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:49:02,472 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:49:02,472 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:49:02,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:49:02,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:49:02,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:49:02,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:49:02,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:49:02,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:49:02,476 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:49:02,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:49:02,477 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_f5555d85-d3df-47bf-866d-ff418d3893f8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5555d85-d3df-47bf-866d-ff418d3893f8/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5ed9d077a05ec08544f0d3c902eb6b5aa6ad768c4ec69a1caaef2b54748a07e [2022-11-18 19:49:02,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:49:02,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:49:02,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:49:02,873 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:49:02,874 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:49:02,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5555d85-d3df-47bf-866d-ff418d3893f8/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-ext/14_spin2003.i [2022-11-18 19:49:02,973 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5555d85-d3df-47bf-866d-ff418d3893f8/bin/uautomizer-TMbwUNV5ro/data/9f94a5fe0/75d5e9e649b14186aef7030f7ef9379d/FLAGdb83b6142 [2022-11-18 19:49:03,674 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:49:03,675 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5555d85-d3df-47bf-866d-ff418d3893f8/sv-benchmarks/c/pthread-ext/14_spin2003.i [2022-11-18 19:49:03,689 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5555d85-d3df-47bf-866d-ff418d3893f8/bin/uautomizer-TMbwUNV5ro/data/9f94a5fe0/75d5e9e649b14186aef7030f7ef9379d/FLAGdb83b6142 [2022-11-18 19:49:03,955 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5555d85-d3df-47bf-866d-ff418d3893f8/bin/uautomizer-TMbwUNV5ro/data/9f94a5fe0/75d5e9e649b14186aef7030f7ef9379d [2022-11-18 19:49:03,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:49:03,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:49:03,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:49:03,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:49:03,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:49:03,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:49:03" (1/1) ... [2022-11-18 19:49:03,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a93593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:03, skipping insertion in model container [2022-11-18 19:49:03,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:49:03" (1/1) ... [2022-11-18 19:49:03,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:49:04,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:49:04,503 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_f5555d85-d3df-47bf-866d-ff418d3893f8/sv-benchmarks/c/pthread-ext/14_spin2003.i[30203,30216] [2022-11-18 19:49:04,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:49:04,531 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:49:04,581 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_f5555d85-d3df-47bf-866d-ff418d3893f8/sv-benchmarks/c/pthread-ext/14_spin2003.i[30203,30216] [2022-11-18 19:49:04,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:49:04,624 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:49:04,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:04 WrapperNode [2022-11-18 19:49:04,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:49:04,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:49:04,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:49:04,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:49:04,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:04" (1/1) ... [2022-11-18 19:49:04,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:04" (1/1) ... [2022-11-18 19:49:04,669 INFO L138 Inliner]: procedures = 169, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 47 [2022-11-18 19:49:04,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:49:04,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:49:04,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:49:04,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:49:04,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:04" (1/1) ... [2022-11-18 19:49:04,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:04" (1/1) ... [2022-11-18 19:49:04,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:04" (1/1) ... [2022-11-18 19:49:04,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:04" (1/1) ... [2022-11-18 19:49:04,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:04" (1/1) ... [2022-11-18 19:49:04,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:04" (1/1) ... [2022-11-18 19:49:04,696 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:04" (1/1) ... [2022-11-18 19:49:04,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:04" (1/1) ... [2022-11-18 19:49:04,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:49:04,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:49:04,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:49:04,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:49:04,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:04" (1/1) ... [2022-11-18 19:49:04,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:49:04,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5555d85-d3df-47bf-866d-ff418d3893f8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:04,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5555d85-d3df-47bf-866d-ff418d3893f8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:49:04,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5555d85-d3df-47bf-866d-ff418d3893f8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:49:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-18 19:49:04,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-18 19:49:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:49:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:49:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:49:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:49:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:49:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:49:04,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:49:04,784 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 19:49:04,914 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:49:04,917 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:49:05,079 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:49:05,129 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:49:05,129 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 19:49:05,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:49:05 BoogieIcfgContainer [2022-11-18 19:49:05,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:49:05,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:49:05,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:49:05,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:49:05,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:49:03" (1/3) ... [2022-11-18 19:49:05,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef857ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:49:05, skipping insertion in model container [2022-11-18 19:49:05,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:04" (2/3) ... [2022-11-18 19:49:05,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef857ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:49:05, skipping insertion in model container [2022-11-18 19:49:05,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:49:05" (3/3) ... [2022-11-18 19:49:05,143 INFO L112 eAbstractionObserver]: Analyzing ICFG 14_spin2003.i [2022-11-18 19:49:05,192 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:49:05,192 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-18 19:49:05,192 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:49:05,288 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 19:49:05,350 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 19:49:05,370 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 48 transitions, 101 flow [2022-11-18 19:49:05,380 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 48 transitions, 101 flow [2022-11-18 19:49:05,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 48 transitions, 101 flow [2022-11-18 19:49:05,459 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2022-11-18 19:49:05,462 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:49:05,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 64 events. 3/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 112 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 32. Up to 4 conditions per place. [2022-11-18 19:49:05,470 INFO L119 LiptonReduction]: Number of co-enabled transitions 456 [2022-11-18 19:49:07,578 INFO L134 LiptonReduction]: Checked pairs total: 441 [2022-11-18 19:49:07,578 INFO L136 LiptonReduction]: Total number of compositions: 51 [2022-11-18 19:49:07,588 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 11 transitions, 27 flow [2022-11-18 19:49:07,606 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 29 states, 17 states have (on average 2.411764705882353) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 19:49:07,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:49:07,640 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;@1fcb910b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:49:07,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-18 19:49:07,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 2.411764705882353) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 19:49:07,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:49:07,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:07,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:49:07,653 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-11-18 19:49:07,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:07,662 INFO L85 PathProgramCache]: Analyzing trace with hash 8113, now seen corresponding path program 1 times [2022-11-18 19:49:07,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:07,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674975128] [2022-11-18 19:49:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:07,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:07,903 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 19:49:07,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:07,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674975128] [2022-11-18 19:49:07,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674975128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:07,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:07,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:49:07,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632910666] [2022-11-18 19:49:07,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:07,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:49:07,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:07,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:49:07,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:07,938 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 2.411764705882353) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:07,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:07,971 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2022-11-18 19:49:07,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:49:07,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-18 19:49:07,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:07,983 INFO L225 Difference]: With dead ends: 14 [2022-11-18 19:49:07,983 INFO L226 Difference]: Without dead ends: 14 [2022-11-18 19:49:07,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:07,988 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:07,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:49:08,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-18 19:49:08,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-18 19:49:08,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 19:49:08,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2022-11-18 19:49:08,022 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 2 [2022-11-18 19:49:08,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:08,022 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-11-18 19:49:08,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:08,027 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2022-11-18 19:49:08,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:49:08,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:08,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:49:08,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:49:08,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-11-18 19:49:08,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:08,029 INFO L85 PathProgramCache]: Analyzing trace with hash 8114, now seen corresponding path program 1 times [2022-11-18 19:49:08,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:08,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855510076] [2022-11-18 19:49:08,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:08,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:08,215 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 19:49:08,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:08,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855510076] [2022-11-18 19:49:08,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855510076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:08,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:08,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:49:08,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402769774] [2022-11-18 19:49:08,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:08,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:49:08,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:08,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:49:08,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:08,220 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:08,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:08,229 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2022-11-18 19:49:08,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:49:08,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-18 19:49:08,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:08,231 INFO L225 Difference]: With dead ends: 11 [2022-11-18 19:49:08,231 INFO L226 Difference]: Without dead ends: 11 [2022-11-18 19:49:08,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:08,233 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:08,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:49:08,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-18 19:49:08,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-18 19:49:08,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 19:49:08,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-11-18 19:49:08,240 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 2 [2022-11-18 19:49:08,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:08,241 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-11-18 19:49:08,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:08,241 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-11-18 19:49:08,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 19:49:08,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:08,243 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-18 19:49:08,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:49:08,243 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-11-18 19:49:08,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:08,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1090221445, now seen corresponding path program 1 times [2022-11-18 19:49:08,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:08,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001865180] [2022-11-18 19:49:08,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:08,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:49:08,287 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:49:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:49:08,330 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:49:08,331 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:49:08,332 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-11-18 19:49:08,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2022-11-18 19:49:08,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2022-11-18 19:49:08,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2022-11-18 19:49:08,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 6 remaining) [2022-11-18 19:49:08,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2022-11-18 19:49:08,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:49:08,340 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-18 19:49:08,343 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:49:08,343 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 19:49:08,367 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 19:49:08,377 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 19:49:08,377 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 61 transitions, 134 flow [2022-11-18 19:49:08,379 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 61 transitions, 134 flow [2022-11-18 19:49:08,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 61 transitions, 134 flow [2022-11-18 19:49:08,421 INFO L130 PetriNetUnfolder]: 5/95 cut-off events. [2022-11-18 19:49:08,421 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 19:49:08,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 95 events. 5/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 207 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 65. Up to 6 conditions per place. [2022-11-18 19:49:08,426 INFO L119 LiptonReduction]: Number of co-enabled transitions 1224 [2022-11-18 19:49:10,002 INFO L134 LiptonReduction]: Checked pairs total: 3409 [2022-11-18 19:49:10,003 INFO L136 LiptonReduction]: Total number of compositions: 51 [2022-11-18 19:49:10,003 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 24 transitions, 60 flow [2022-11-18 19:49:10,068 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 497 states, 468 states have (on average 2.784188034188034) internal successors, (1303), 496 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states 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 19:49:10,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:49:10,076 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;@1fcb910b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:49:10,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-18 19:49:10,078 INFO L276 IsEmpty]: Start isEmpty. Operand has 497 states, 468 states have (on average 2.784188034188034) internal successors, (1303), 496 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states 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 19:49:10,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:49:10,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:10,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:49:10,080 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:49:10,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:10,081 INFO L85 PathProgramCache]: Analyzing trace with hash 12085, now seen corresponding path program 1 times [2022-11-18 19:49:10,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:10,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966351739] [2022-11-18 19:49:10,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:10,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:10,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:10,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966351739] [2022-11-18 19:49:10,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966351739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:10,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:10,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:49:10,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577072238] [2022-11-18 19:49:10,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:10,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:49:10,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:10,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:49:10,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:10,161 INFO L87 Difference]: Start difference. First operand has 497 states, 468 states have (on average 2.784188034188034) internal successors, (1303), 496 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:10,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:10,215 INFO L93 Difference]: Finished difference Result 333 states and 818 transitions. [2022-11-18 19:49:10,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:49:10,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-18 19:49:10,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:10,227 INFO L225 Difference]: With dead ends: 333 [2022-11-18 19:49:10,230 INFO L226 Difference]: Without dead ends: 333 [2022-11-18 19:49:10,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:10,232 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:10,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 8 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:49:10,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-11-18 19:49:10,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2022-11-18 19:49:10,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 322 states have (on average 2.540372670807453) internal successors, (818), 332 states have internal predecessors, (818), 0 states have call successors, (0), 0 states 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 19:49:10,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 818 transitions. [2022-11-18 19:49:10,296 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 818 transitions. Word has length 2 [2022-11-18 19:49:10,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:10,297 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 818 transitions. [2022-11-18 19:49:10,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:10,298 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 818 transitions. [2022-11-18 19:49:10,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:49:10,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:10,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:49:10,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:49:10,299 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:49:10,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:10,300 INFO L85 PathProgramCache]: Analyzing trace with hash 12084, now seen corresponding path program 1 times [2022-11-18 19:49:10,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:10,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99753622] [2022-11-18 19:49:10,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:10,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:10,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:10,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:10,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99753622] [2022-11-18 19:49:10,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99753622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:10,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:10,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:49:10,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380716917] [2022-11-18 19:49:10,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:10,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:49:10,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:10,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:49:10,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:10,383 INFO L87 Difference]: Start difference. First operand 333 states and 818 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:10,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:10,409 INFO L93 Difference]: Finished difference Result 276 states and 671 transitions. [2022-11-18 19:49:10,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:49:10,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-18 19:49:10,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:10,412 INFO L225 Difference]: With dead ends: 276 [2022-11-18 19:49:10,412 INFO L226 Difference]: Without dead ends: 276 [2022-11-18 19:49:10,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:10,413 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:10,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 8 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:49:10,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-11-18 19:49:10,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2022-11-18 19:49:10,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 272 states have (on average 2.4669117647058822) internal successors, (671), 275 states have internal predecessors, (671), 0 states have call successors, (0), 0 states 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 19:49:10,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 671 transitions. [2022-11-18 19:49:10,429 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 671 transitions. Word has length 2 [2022-11-18 19:49:10,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:10,429 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 671 transitions. [2022-11-18 19:49:10,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:10,429 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 671 transitions. [2022-11-18 19:49:10,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 19:49:10,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:10,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:10,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:49:10,431 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:49:10,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:10,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1682663391, now seen corresponding path program 1 times [2022-11-18 19:49:10,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:10,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422417287] [2022-11-18 19:49:10,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:10,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:10,494 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 19:49:10,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:10,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422417287] [2022-11-18 19:49:10,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422417287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:10,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:10,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:49:10,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886909122] [2022-11-18 19:49:10,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:10,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:49:10,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:10,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:49:10,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:10,498 INFO L87 Difference]: Start difference. First operand 276 states and 671 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 19:49:10,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:10,553 INFO L93 Difference]: Finished difference Result 277 states and 637 transitions. [2022-11-18 19:49:10,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:49:10,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 7 [2022-11-18 19:49:10,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:10,560 INFO L225 Difference]: With dead ends: 277 [2022-11-18 19:49:10,561 INFO L226 Difference]: Without dead ends: 277 [2022-11-18 19:49:10,561 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 19:49:10,562 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:10,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 12 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:49:10,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-18 19:49:10,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 257. [2022-11-18 19:49:10,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 254 states have (on average 2.326771653543307) internal successors, (591), 256 states have internal predecessors, (591), 0 states have call successors, (0), 0 states 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 19:49:10,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 591 transitions. [2022-11-18 19:49:10,597 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 591 transitions. Word has length 7 [2022-11-18 19:49:10,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:10,597 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 591 transitions. [2022-11-18 19:49:10,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 19:49:10,598 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 591 transitions. [2022-11-18 19:49:10,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:49:10,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:10,599 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-18 19:49:10,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:49:10,599 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-18 19:49:10,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:10,600 INFO L85 PathProgramCache]: Analyzing trace with hash -869587704, now seen corresponding path program 1 times [2022-11-18 19:49:10,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:10,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942559576] [2022-11-18 19:49:10,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:10,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:49:10,632 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:49:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:49:10,653 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:49:10,653 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:49:10,654 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-11-18 19:49:10,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2022-11-18 19:49:10,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2022-11-18 19:49:10,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2022-11-18 19:49:10,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2022-11-18 19:49:10,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2022-11-18 19:49:10,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2022-11-18 19:49:10,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:49:10,657 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-18 19:49:10,657 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:49:10,657 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 19:49:10,678 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 19:49:10,681 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 19:49:10,681 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 74 transitions, 169 flow [2022-11-18 19:49:10,682 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 74 transitions, 169 flow [2022-11-18 19:49:10,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 74 transitions, 169 flow [2022-11-18 19:49:10,709 INFO L130 PetriNetUnfolder]: 7/126 cut-off events. [2022-11-18 19:49:10,709 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-18 19:49:10,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 126 events. 7/126 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 297 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 99. Up to 8 conditions per place. [2022-11-18 19:49:10,716 INFO L119 LiptonReduction]: Number of co-enabled transitions 2304 [2022-11-18 19:49:12,472 INFO L134 LiptonReduction]: Checked pairs total: 7726 [2022-11-18 19:49:12,472 INFO L136 LiptonReduction]: Total number of compositions: 66 [2022-11-18 19:49:12,473 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 33 transitions, 87 flow [2022-11-18 19:49:12,609 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3527 states, 3463 states have (on average 3.8215420155934163) internal successors, (13234), 3526 states have internal predecessors, (13234), 0 states have call successors, (0), 0 states 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 19:49:12,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:49:12,611 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;@1fcb910b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:49:12,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-18 19:49:12,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 3527 states, 3463 states have (on average 3.8215420155934163) internal successors, (13234), 3526 states have internal predecessors, (13234), 0 states have call successors, (0), 0 states 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 19:49:12,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:49:12,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:12,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:49:12,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-18 19:49:12,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:12,626 INFO L85 PathProgramCache]: Analyzing trace with hash 16979, now seen corresponding path program 1 times [2022-11-18 19:49:12,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:12,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066375978] [2022-11-18 19:49:12,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:12,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:12,637 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 19:49:12,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:12,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066375978] [2022-11-18 19:49:12,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066375978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:12,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:12,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:49:12,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705432536] [2022-11-18 19:49:12,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:12,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:49:12,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:12,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:49:12,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:49:12,654 INFO L87 Difference]: Start difference. First operand has 3527 states, 3463 states have (on average 3.8215420155934163) internal successors, (13234), 3526 states have internal predecessors, (13234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:12,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:12,772 INFO L93 Difference]: Finished difference Result 2742 states and 9113 transitions. [2022-11-18 19:49:12,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:49:12,779 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-18 19:49:12,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:12,806 INFO L225 Difference]: With dead ends: 2742 [2022-11-18 19:49:12,806 INFO L226 Difference]: Without dead ends: 2742 [2022-11-18 19:49:12,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:49:12,807 INFO L413 NwaCegarLoop]: 12 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, 12 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 19:49:12,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:49:12,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2742 states. [2022-11-18 19:49:12,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2742 to 2742. [2022-11-18 19:49:12,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2742 states, 2704 states have (on average 3.3701923076923075) internal successors, (9113), 2741 states have internal predecessors, (9113), 0 states have call successors, (0), 0 states 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 19:49:12,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2742 states to 2742 states and 9113 transitions. [2022-11-18 19:49:12,929 INFO L78 Accepts]: Start accepts. Automaton has 2742 states and 9113 transitions. Word has length 2 [2022-11-18 19:49:12,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:12,929 INFO L495 AbstractCegarLoop]: Abstraction has 2742 states and 9113 transitions. [2022-11-18 19:49:12,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:12,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2742 states and 9113 transitions. [2022-11-18 19:49:12,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:49:12,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:12,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:49:12,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:49:12,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-18 19:49:12,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:12,931 INFO L85 PathProgramCache]: Analyzing trace with hash 16970, now seen corresponding path program 1 times [2022-11-18 19:49:12,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:12,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538340665] [2022-11-18 19:49:12,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:12,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:12,958 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 19:49:12,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:12,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538340665] [2022-11-18 19:49:12,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538340665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:12,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:12,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:49:12,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412829592] [2022-11-18 19:49:12,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:12,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:49:12,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:12,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:49:12,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:12,961 INFO L87 Difference]: Start difference. First operand 2742 states and 9113 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:13,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:13,011 INFO L93 Difference]: Finished difference Result 2342 states and 7741 transitions. [2022-11-18 19:49:13,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:49:13,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-18 19:49:13,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:13,029 INFO L225 Difference]: With dead ends: 2342 [2022-11-18 19:49:13,029 INFO L226 Difference]: Without dead ends: 2342 [2022-11-18 19:49:13,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:13,030 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 12 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 19:49:13,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 12 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:49:13,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2022-11-18 19:49:13,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 2342. [2022-11-18 19:49:13,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2342 states, 2319 states have (on average 3.338076757222941) internal successors, (7741), 2341 states have internal predecessors, (7741), 0 states have call successors, (0), 0 states 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 19:49:13,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 7741 transitions. [2022-11-18 19:49:13,171 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 7741 transitions. Word has length 2 [2022-11-18 19:49:13,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:13,172 INFO L495 AbstractCegarLoop]: Abstraction has 2342 states and 7741 transitions. [2022-11-18 19:49:13,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:13,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 7741 transitions. [2022-11-18 19:49:13,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:49:13,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:13,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:49:13,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:49:13,174 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-18 19:49:13,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:13,175 INFO L85 PathProgramCache]: Analyzing trace with hash 16971, now seen corresponding path program 1 times [2022-11-18 19:49:13,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:13,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396829693] [2022-11-18 19:49:13,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:13,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:13,245 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 19:49:13,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:13,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396829693] [2022-11-18 19:49:13,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396829693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:13,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:13,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:49:13,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920536724] [2022-11-18 19:49:13,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:13,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:49:13,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:13,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:49:13,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:13,248 INFO L87 Difference]: Start difference. First operand 2342 states and 7741 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:13,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:13,300 INFO L93 Difference]: Finished difference Result 1942 states and 6369 transitions. [2022-11-18 19:49:13,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:49:13,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-18 19:49:13,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:13,314 INFO L225 Difference]: With dead ends: 1942 [2022-11-18 19:49:13,315 INFO L226 Difference]: Without dead ends: 1942 [2022-11-18 19:49:13,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:13,316 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 12 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 19:49:13,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 12 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:49:13,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2022-11-18 19:49:13,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1942. [2022-11-18 19:49:13,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1934 states have (on average 3.2931747673216134) internal successors, (6369), 1941 states have internal predecessors, (6369), 0 states have call successors, (0), 0 states 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 19:49:13,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 6369 transitions. [2022-11-18 19:49:13,396 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 6369 transitions. Word has length 2 [2022-11-18 19:49:13,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:13,397 INFO L495 AbstractCegarLoop]: Abstraction has 1942 states and 6369 transitions. [2022-11-18 19:49:13,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:13,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 6369 transitions. [2022-11-18 19:49:13,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 19:49:13,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:13,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:13,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:49:13,399 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-18 19:49:13,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:13,400 INFO L85 PathProgramCache]: Analyzing trace with hash 891827987, now seen corresponding path program 1 times [2022-11-18 19:49:13,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:13,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931535361] [2022-11-18 19:49:13,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:13,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:13,450 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 19:49:13,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:13,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931535361] [2022-11-18 19:49:13,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931535361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:13,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:13,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:49:13,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180865353] [2022-11-18 19:49:13,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:13,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:49:13,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:13,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:49:13,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:13,453 INFO L87 Difference]: Start difference. First operand 1942 states and 6369 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 19:49:13,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:13,588 INFO L93 Difference]: Finished difference Result 2297 states and 7000 transitions. [2022-11-18 19:49:13,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:49:13,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 7 [2022-11-18 19:49:13,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:13,607 INFO L225 Difference]: With dead ends: 2297 [2022-11-18 19:49:13,607 INFO L226 Difference]: Without dead ends: 2297 [2022-11-18 19:49:13,608 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 19:49:13,608 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:13,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 15 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:49:13,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2022-11-18 19:49:13,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 2011. [2022-11-18 19:49:13,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2011 states, 2004 states have (on average 3.0733532934131738) internal successors, (6159), 2010 states have internal predecessors, (6159), 0 states have call successors, (0), 0 states 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 19:49:13,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 6159 transitions. [2022-11-18 19:49:13,704 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 6159 transitions. Word has length 7 [2022-11-18 19:49:13,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:13,705 INFO L495 AbstractCegarLoop]: Abstraction has 2011 states and 6159 transitions. [2022-11-18 19:49:13,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 19:49:13,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 6159 transitions. [2022-11-18 19:49:13,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:49:13,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:13,707 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:13,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:49:13,707 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-18 19:49:13,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:13,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1531568954, now seen corresponding path program 1 times [2022-11-18 19:49:13,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:13,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811513093] [2022-11-18 19:49:13,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:13,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:13,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:13,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:13,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811513093] [2022-11-18 19:49:13,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811513093] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:13,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168317448] [2022-11-18 19:49:13,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:13,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:13,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5555d85-d3df-47bf-866d-ff418d3893f8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:13,874 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5555d85-d3df-47bf-866d-ff418d3893f8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:13,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5555d85-d3df-47bf-866d-ff418d3893f8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:49:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:13,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:49:13,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:14,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:49:14,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168317448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:14,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:49:14,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-18 19:49:14,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131834362] [2022-11-18 19:49:14,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:14,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:49:14,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:14,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:49:14,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:49:14,065 INFO L87 Difference]: Start difference. First operand 2011 states and 6159 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 19:49:14,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:14,135 INFO L93 Difference]: Finished difference Result 387 states and 731 transitions. [2022-11-18 19:49:14,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:49:14,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 19:49:14,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:14,138 INFO L225 Difference]: With dead ends: 387 [2022-11-18 19:49:14,138 INFO L226 Difference]: Without dead ends: 387 [2022-11-18 19:49:14,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:49:14,139 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:14,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 18 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:49:14,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-11-18 19:49:14,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2022-11-18 19:49:14,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 1.8937823834196892) internal successors, (731), 386 states have internal predecessors, (731), 0 states have call successors, (0), 0 states 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 19:49:14,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 731 transitions. [2022-11-18 19:49:14,149 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 731 transitions. Word has length 13 [2022-11-18 19:49:14,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:14,150 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 731 transitions. [2022-11-18 19:49:14,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 19:49:14,173 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 731 transitions. [2022-11-18 19:49:14,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:49:14,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:14,175 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-18 19:49:14,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5555d85-d3df-47bf-866d-ff418d3893f8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:14,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5555d85-d3df-47bf-866d-ff418d3893f8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 19:49:14,376 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-18 19:49:14,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:14,376 INFO L85 PathProgramCache]: Analyzing trace with hash 410441860, now seen corresponding path program 1 times [2022-11-18 19:49:14,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:14,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416232227] [2022-11-18 19:49:14,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:14,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:49:14,401 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:49:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:49:14,418 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:49:14,421 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:49:14,421 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2022-11-18 19:49:14,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2022-11-18 19:49:14,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2022-11-18 19:49:14,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2022-11-18 19:49:14,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2022-11-18 19:49:14,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2022-11-18 19:49:14,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2022-11-18 19:49:14,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2022-11-18 19:49:14,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:49:14,424 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-18 19:49:14,425 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:49:14,425 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-18 19:49:14,447 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 19:49:14,452 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 19:49:14,452 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 87 transitions, 206 flow [2022-11-18 19:49:14,452 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 87 transitions, 206 flow [2022-11-18 19:49:14,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 87 transitions, 206 flow [2022-11-18 19:49:14,505 INFO L130 PetriNetUnfolder]: 9/157 cut-off events. [2022-11-18 19:49:14,506 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-18 19:49:14,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 157 events. 9/157 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 391 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 134. Up to 10 conditions per place. [2022-11-18 19:49:14,515 INFO L119 LiptonReduction]: Number of co-enabled transitions 3696 [2022-11-18 19:49:16,753 INFO L134 LiptonReduction]: Checked pairs total: 16132 [2022-11-18 19:49:16,753 INFO L136 LiptonReduction]: Total number of compositions: 77 [2022-11-18 19:49:16,755 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 41 transitions, 114 flow [2022-11-18 19:49:17,998 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 24777 states, 24642 states have (on average 4.777899521142764) internal successors, (117737), 24776 states have internal predecessors, (117737), 0 states have call successors, (0), 0 states 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 19:49:17,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:49:18,000 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;@1fcb910b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:49:18,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-18 19:49:18,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 24777 states, 24642 states have (on average 4.777899521142764) internal successors, (117737), 24776 states have internal predecessors, (117737), 0 states have call successors, (0), 0 states 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 19:49:18,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:49:18,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:18,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:49:18,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 19:49:18,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:18,147 INFO L85 PathProgramCache]: Analyzing trace with hash 22513, now seen corresponding path program 1 times [2022-11-18 19:49:18,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:18,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908594172] [2022-11-18 19:49:18,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:18,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:18,158 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 19:49:18,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:18,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908594172] [2022-11-18 19:49:18,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908594172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:18,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:18,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:49:18,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656999906] [2022-11-18 19:49:18,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:18,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:49:18,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:18,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:49:18,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:49:18,213 INFO L87 Difference]: Start difference. First operand has 24777 states, 24642 states have (on average 4.777899521142764) internal successors, (117737), 24776 states have internal predecessors, (117737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:18,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:18,708 INFO L93 Difference]: Finished difference Result 19206 states and 80261 transitions. [2022-11-18 19:49:18,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:49:18,708 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-18 19:49:18,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:19,075 INFO L225 Difference]: With dead ends: 19206 [2022-11-18 19:49:19,075 INFO L226 Difference]: Without dead ends: 19206 [2022-11-18 19:49:19,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:49:19,076 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:19,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:49:19,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19206 states. [2022-11-18 19:49:20,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19206 to 19206. [2022-11-18 19:49:20,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19206 states, 19128 states have (on average 4.195995399414471) internal successors, (80261), 19205 states have internal predecessors, (80261), 0 states have call successors, (0), 0 states 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 19:49:20,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19206 states to 19206 states and 80261 transitions. [2022-11-18 19:49:20,693 INFO L78 Accepts]: Start accepts. Automaton has 19206 states and 80261 transitions. Word has length 2 [2022-11-18 19:49:20,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:20,693 INFO L495 AbstractCegarLoop]: Abstraction has 19206 states and 80261 transitions. [2022-11-18 19:49:20,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:20,694 INFO L276 IsEmpty]: Start isEmpty. Operand 19206 states and 80261 transitions. [2022-11-18 19:49:20,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:49:20,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:20,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:49:20,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:49:20,696 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 19:49:20,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:20,697 INFO L85 PathProgramCache]: Analyzing trace with hash 22505, now seen corresponding path program 1 times [2022-11-18 19:49:20,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:20,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99783296] [2022-11-18 19:49:20,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:20,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:20,734 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 19:49:20,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:20,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99783296] [2022-11-18 19:49:20,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99783296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:20,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:20,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:49:20,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313663464] [2022-11-18 19:49:20,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:20,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:49:20,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:20,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:49:20,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:20,738 INFO L87 Difference]: Start difference. First operand 19206 states and 80261 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:21,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:21,151 INFO L93 Difference]: Finished difference Result 16405 states and 68256 transitions. [2022-11-18 19:49:21,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:49:21,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-18 19:49:21,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:21,301 INFO L225 Difference]: With dead ends: 16405 [2022-11-18 19:49:21,301 INFO L226 Difference]: Without dead ends: 16405 [2022-11-18 19:49:21,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:21,302 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:21,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 15 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:49:21,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16405 states. [2022-11-18 19:49:22,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16405 to 16405. [2022-11-18 19:49:22,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16405 states, 16358 states have (on average 4.172637241716592) internal successors, (68256), 16404 states have internal predecessors, (68256), 0 states have call successors, (0), 0 states 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 19:49:22,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16405 states to 16405 states and 68256 transitions. [2022-11-18 19:49:22,345 INFO L78 Accepts]: Start accepts. Automaton has 16405 states and 68256 transitions. Word has length 2 [2022-11-18 19:49:22,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:22,346 INFO L495 AbstractCegarLoop]: Abstraction has 16405 states and 68256 transitions. [2022-11-18 19:49:22,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:22,346 INFO L276 IsEmpty]: Start isEmpty. Operand 16405 states and 68256 transitions. [2022-11-18 19:49:22,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:49:22,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:22,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:49:22,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:49:22,347 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 19:49:22,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:22,347 INFO L85 PathProgramCache]: Analyzing trace with hash 22507, now seen corresponding path program 1 times [2022-11-18 19:49:22,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:22,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854285543] [2022-11-18 19:49:22,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:22,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:22,381 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 19:49:22,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:22,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854285543] [2022-11-18 19:49:22,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854285543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:22,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:22,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:49:22,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958155383] [2022-11-18 19:49:22,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:22,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:49:22,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:22,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:49:22,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:22,383 INFO L87 Difference]: Start difference. First operand 16405 states and 68256 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:22,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:22,679 INFO L93 Difference]: Finished difference Result 13604 states and 56251 transitions. [2022-11-18 19:49:22,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:49:22,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-18 19:49:22,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:22,829 INFO L225 Difference]: With dead ends: 13604 [2022-11-18 19:49:22,829 INFO L226 Difference]: Without dead ends: 13604 [2022-11-18 19:49:22,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:22,835 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:22,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 15 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:49:22,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13604 states. [2022-11-18 19:49:23,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13604 to 13604. [2022-11-18 19:49:23,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13604 states, 13588 states have (on average 4.139755666764793) internal successors, (56251), 13603 states have internal predecessors, (56251), 0 states have call successors, (0), 0 states 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 19:49:23,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13604 states to 13604 states and 56251 transitions. [2022-11-18 19:49:23,391 INFO L78 Accepts]: Start accepts. Automaton has 13604 states and 56251 transitions. Word has length 2 [2022-11-18 19:49:23,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:23,391 INFO L495 AbstractCegarLoop]: Abstraction has 13604 states and 56251 transitions. [2022-11-18 19:49:23,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:23,391 INFO L276 IsEmpty]: Start isEmpty. Operand 13604 states and 56251 transitions. [2022-11-18 19:49:23,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 19:49:23,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:23,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:23,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:49:23,393 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 19:49:23,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:23,393 INFO L85 PathProgramCache]: Analyzing trace with hash 654571235, now seen corresponding path program 1 times [2022-11-18 19:49:23,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:23,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141669621] [2022-11-18 19:49:23,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:23,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:23,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:23,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141669621] [2022-11-18 19:49:23,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141669621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:23,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:23,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:49:23,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204487187] [2022-11-18 19:49:23,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:23,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:49:23,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:23,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:49:23,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:23,609 INFO L87 Difference]: Start difference. First operand 13604 states and 56251 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 19:49:23,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:23,936 INFO L93 Difference]: Finished difference Result 18213 states and 69447 transitions. [2022-11-18 19:49:23,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:49:23,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 7 [2022-11-18 19:49:23,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:24,058 INFO L225 Difference]: With dead ends: 18213 [2022-11-18 19:49:24,058 INFO L226 Difference]: Without dead ends: 18213 [2022-11-18 19:49:24,059 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 19:49:24,059 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:24,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 18 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:49:24,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18213 states. [2022-11-18 19:49:24,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18213 to 15501. [2022-11-18 19:49:24,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15501 states, 15486 states have (on average 3.8563218390804597) internal successors, (59719), 15500 states have internal predecessors, (59719), 0 states have call successors, (0), 0 states 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 19:49:25,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15501 states to 15501 states and 59719 transitions. [2022-11-18 19:49:25,045 INFO L78 Accepts]: Start accepts. Automaton has 15501 states and 59719 transitions. Word has length 7 [2022-11-18 19:49:25,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:25,046 INFO L495 AbstractCegarLoop]: Abstraction has 15501 states and 59719 transitions. [2022-11-18 19:49:25,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 19:49:25,046 INFO L276 IsEmpty]: Start isEmpty. Operand 15501 states and 59719 transitions. [2022-11-18 19:49:25,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:49:25,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:25,052 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:25,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:49:25,052 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 19:49:25,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:25,053 INFO L85 PathProgramCache]: Analyzing trace with hash 973231157, now seen corresponding path program 1 times [2022-11-18 19:49:25,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:25,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22171556] [2022-11-18 19:49:25,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:25,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:25,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:25,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:25,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22171556] [2022-11-18 19:49:25,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22171556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:25,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:25,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:49:25,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352824656] [2022-11-18 19:49:25,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:25,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:49:25,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:25,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:49:25,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:25,116 INFO L87 Difference]: Start difference. First operand 15501 states and 59719 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 19:49:25,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:25,151 INFO L93 Difference]: Finished difference Result 1051 states and 2047 transitions. [2022-11-18 19:49:25,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:49:25,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 19:49:25,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:25,153 INFO L225 Difference]: With dead ends: 1051 [2022-11-18 19:49:25,154 INFO L226 Difference]: Without dead ends: 1051 [2022-11-18 19:49:25,155 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 19:49:25,156 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:25,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 21 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:49:25,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2022-11-18 19:49:25,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1051. [2022-11-18 19:49:25,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 1.9495238095238094) internal successors, (2047), 1050 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states 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 19:49:25,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2047 transitions. [2022-11-18 19:49:25,175 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2047 transitions. Word has length 13 [2022-11-18 19:49:25,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:25,176 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 2047 transitions. [2022-11-18 19:49:25,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 19:49:25,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2047 transitions. [2022-11-18 19:49:25,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 19:49:25,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:25,178 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:25,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:49:25,178 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 19:49:25,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:25,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1192403802, now seen corresponding path program 1 times [2022-11-18 19:49:25,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:25,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199746767] [2022-11-18 19:49:25,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:25,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:49:25,202 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:49:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:49:25,214 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:49:25,214 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:49:25,215 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-11-18 19:49:25,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (7 of 9 remaining) [2022-11-18 19:49:25,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (6 of 9 remaining) [2022-11-18 19:49:25,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2022-11-18 19:49:25,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2022-11-18 19:49:25,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 9 remaining) [2022-11-18 19:49:25,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 9 remaining) [2022-11-18 19:49:25,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 9 remaining) [2022-11-18 19:49:25,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2022-11-18 19:49:25,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 19:49:25,217 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-18 19:49:25,218 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:49:25,218 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-18 19:49:25,243 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 19:49:25,245 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 19:49:25,245 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 100 transitions, 245 flow [2022-11-18 19:49:25,246 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 100 transitions, 245 flow [2022-11-18 19:49:25,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 100 transitions, 245 flow [2022-11-18 19:49:25,281 INFO L130 PetriNetUnfolder]: 11/188 cut-off events. [2022-11-18 19:49:25,282 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-18 19:49:25,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 188 events. 11/188 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 474 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 170. Up to 12 conditions per place. [2022-11-18 19:49:25,288 INFO L119 LiptonReduction]: Number of co-enabled transitions 5400 [2022-11-18 19:49:27,487 INFO L134 LiptonReduction]: Checked pairs total: 19991 [2022-11-18 19:49:27,487 INFO L136 LiptonReduction]: Total number of compositions: 88 [2022-11-18 19:49:27,488 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 49 transitions, 143 flow [2022-11-18 19:49:34,334 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 173607 states, 173329 states have (on average 5.761482498600927) internal successors, (998632), 173606 states have internal predecessors, (998632), 0 states have call successors, (0), 0 states 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 19:49:34,368 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:49:34,379 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;@1fcb910b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:49:34,379 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-18 19:49:34,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 173607 states, 173329 states have (on average 5.761482498600927) internal successors, (998632), 173606 states have internal predecessors, (998632), 0 states have call successors, (0), 0 states 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 19:49:34,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:49:34,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:34,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:49:34,626 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-18 19:49:34,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:34,628 INFO L85 PathProgramCache]: Analyzing trace with hash 28937, now seen corresponding path program 1 times [2022-11-18 19:49:34,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:34,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448472089] [2022-11-18 19:49:34,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:34,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:34,665 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 19:49:34,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:34,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448472089] [2022-11-18 19:49:34,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448472089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:34,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:34,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:49:34,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194684011] [2022-11-18 19:49:34,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:34,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:49:34,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:34,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:49:34,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:34,964 INFO L87 Difference]: Start difference. First operand has 173607 states, 173329 states have (on average 5.761482498600927) internal successors, (998632), 173606 states have internal predecessors, (998632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:38,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:38,294 INFO L93 Difference]: Finished difference Result 114846 states and 576239 transitions. [2022-11-18 19:49:38,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:49:38,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-18 19:49:38,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:39,358 INFO L225 Difference]: With dead ends: 114846 [2022-11-18 19:49:39,358 INFO L226 Difference]: Without dead ends: 114846 [2022-11-18 19:49:39,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:39,359 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:39,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 18 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:49:39,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114846 states. [2022-11-18 19:49:44,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114846 to 114846. [2022-11-18 19:49:45,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114846 states, 114751 states have (on average 5.02164687017978) internal successors, (576239), 114845 states have internal predecessors, (576239), 0 states have call successors, (0), 0 states 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 19:49:46,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114846 states to 114846 states and 576239 transitions. [2022-11-18 19:49:46,982 INFO L78 Accepts]: Start accepts. Automaton has 114846 states and 576239 transitions. Word has length 2 [2022-11-18 19:49:46,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:46,982 INFO L495 AbstractCegarLoop]: Abstraction has 114846 states and 576239 transitions. [2022-11-18 19:49:46,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:46,983 INFO L276 IsEmpty]: Start isEmpty. Operand 114846 states and 576239 transitions. [2022-11-18 19:49:46,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:49:46,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:46,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:49:46,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 19:49:46,984 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-18 19:49:46,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:46,985 INFO L85 PathProgramCache]: Analyzing trace with hash 28938, now seen corresponding path program 1 times [2022-11-18 19:49:46,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:46,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864081233] [2022-11-18 19:49:46,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:46,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:47,050 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 19:49:47,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:47,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864081233] [2022-11-18 19:49:47,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864081233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:47,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:47,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:49:47,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261868113] [2022-11-18 19:49:47,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:47,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:49:47,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:47,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:49:47,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:47,052 INFO L87 Difference]: Start difference. First operand 114846 states and 576239 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:48,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:48,027 INFO L93 Difference]: Finished difference Result 95238 states and 475397 transitions. [2022-11-18 19:49:48,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:49:48,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-18 19:49:48,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:49,757 INFO L225 Difference]: With dead ends: 95238 [2022-11-18 19:49:49,758 INFO L226 Difference]: Without dead ends: 95238 [2022-11-18 19:49:49,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:49,759 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:49,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 18 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:49:49,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95238 states. [2022-11-18 19:49:53,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95238 to 95238. [2022-11-18 19:49:53,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95238 states, 95206 states have (on average 4.99335125937441) internal successors, (475397), 95237 states have internal predecessors, (475397), 0 states have call successors, (0), 0 states 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 19:49:54,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95238 states to 95238 states and 475397 transitions. [2022-11-18 19:49:54,611 INFO L78 Accepts]: Start accepts. Automaton has 95238 states and 475397 transitions. Word has length 2 [2022-11-18 19:49:54,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:54,611 INFO L495 AbstractCegarLoop]: Abstraction has 95238 states and 475397 transitions. [2022-11-18 19:49:54,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:54,612 INFO L276 IsEmpty]: Start isEmpty. Operand 95238 states and 475397 transitions. [2022-11-18 19:49:54,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 19:49:54,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:54,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:54,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 19:49:54,613 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-18 19:49:54,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:54,613 INFO L85 PathProgramCache]: Analyzing trace with hash 323628806, now seen corresponding path program 1 times [2022-11-18 19:49:54,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:54,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173488844] [2022-11-18 19:49:54,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:54,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:55,618 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 19:49:55,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:55,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173488844] [2022-11-18 19:49:55,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173488844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:55,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:55,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:49:55,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964170315] [2022-11-18 19:49:55,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:55,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:49:55,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:55,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:49:55,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:55,620 INFO L87 Difference]: Start difference. First operand 95238 states and 475397 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 19:49:57,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:57,974 INFO L93 Difference]: Finished difference Result 139177 states and 638638 transitions. [2022-11-18 19:49:57,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:49:57,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 7 [2022-11-18 19:49:57,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:59,047 INFO L225 Difference]: With dead ends: 139177 [2022-11-18 19:49:59,048 INFO L226 Difference]: Without dead ends: 139177 [2022-11-18 19:49:59,048 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 19:49:59,049 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 24 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:59,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 21 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:49:59,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139177 states.