./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a950f7b-684a-438b-82ba-118b6972deb0/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a950f7b-684a-438b-82ba-118b6972deb0/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a950f7b-684a-438b-82ba-118b6972deb0/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a950f7b-684a-438b-82ba-118b6972deb0/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a950f7b-684a-438b-82ba-118b6972deb0/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a950f7b-684a-438b-82ba-118b6972deb0/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e064514c886eab27bff1253cfa87b1ac324d3dc8890599c3d4384e987c0d244 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:53:25,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:53:25,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:53:25,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:53:25,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:53:25,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:53:25,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:53:25,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:53:25,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:53:25,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:53:25,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:53:25,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:53:25,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:53:25,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:53:25,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:53:25,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:53:25,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:53:25,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:53:25,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:53:25,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:53:25,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:53:25,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:53:25,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:53:25,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:53:25,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:53:25,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:53:25,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:53:25,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:53:25,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:53:25,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:53:25,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:53:25,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:53:25,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:53:25,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:53:25,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:53:25,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:53:25,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:53:25,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:53:25,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:53:25,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:53:25,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:53:25,519 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a950f7b-684a-438b-82ba-118b6972deb0/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:53:25,550 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:53:25,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:53:25,559 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:53:25,560 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:53:25,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:53:25,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:53:25,562 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:53:25,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:53:25,563 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:53:25,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:53:25,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:53:25,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:53:25,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:53:25,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:53:25,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:53:25,572 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:53:25,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:53:25,573 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:53:25,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:53:25,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:53:25,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:53:25,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:53:25,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:53:25,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:53:25,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:53:25,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:53:25,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:53:25,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:53:25,577 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:53:25,578 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:53:25,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:53:25,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:53:25,580 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_6a950f7b-684a-438b-82ba-118b6972deb0/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a950f7b-684a-438b-82ba-118b6972deb0/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e064514c886eab27bff1253cfa87b1ac324d3dc8890599c3d4384e987c0d244 [2021-10-28 09:53:25,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:53:25,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:53:25,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:53:25,984 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:53:25,986 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:53:25,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a950f7b-684a-438b-82ba-118b6972deb0/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c [2021-10-28 09:53:26,096 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a950f7b-684a-438b-82ba-118b6972deb0/bin/uautomizer-UnR33cPsHg/data/1610ccafe/c8ce23db420f44c2b61a60359eccc3af/FLAG1bd29c657 [2021-10-28 09:53:26,636 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:53:26,636 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a950f7b-684a-438b-82ba-118b6972deb0/sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c [2021-10-28 09:53:26,646 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a950f7b-684a-438b-82ba-118b6972deb0/bin/uautomizer-UnR33cPsHg/data/1610ccafe/c8ce23db420f44c2b61a60359eccc3af/FLAG1bd29c657 [2021-10-28 09:53:26,979 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a950f7b-684a-438b-82ba-118b6972deb0/bin/uautomizer-UnR33cPsHg/data/1610ccafe/c8ce23db420f44c2b61a60359eccc3af [2021-10-28 09:53:26,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:53:26,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:53:26,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:53:26,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:53:26,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:53:26,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:53:26" (1/1) ... [2021-10-28 09:53:26,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc23e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:26, skipping insertion in model container [2021-10-28 09:53:26,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:53:26" (1/1) ... [2021-10-28 09:53:27,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:53:27,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:53:27,301 WARN L228 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_6a950f7b-684a-438b-82ba-118b6972deb0/sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c[2212,2225] [2021-10-28 09:53:27,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:53:27,334 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:53:27,383 WARN L228 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_6a950f7b-684a-438b-82ba-118b6972deb0/sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c[2212,2225] [2021-10-28 09:53:27,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:53:27,415 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:53:27,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:27 WrapperNode [2021-10-28 09:53:27,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:53:27,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:53:27,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:53:27,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:53:27,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:27" (1/1) ... [2021-10-28 09:53:27,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:27" (1/1) ... [2021-10-28 09:53:27,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:53:27,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:53:27,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:53:27,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:53:27,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:27" (1/1) ... [2021-10-28 09:53:27,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:27" (1/1) ... [2021-10-28 09:53:27,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:27" (1/1) ... [2021-10-28 09:53:27,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:27" (1/1) ... [2021-10-28 09:53:27,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:27" (1/1) ... [2021-10-28 09:53:27,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:27" (1/1) ... [2021-10-28 09:53:27,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:27" (1/1) ... [2021-10-28 09:53:27,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:53:27,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:53:27,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:53:27,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:53:27,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:27" (1/1) ... [2021-10-28 09:53:27,560 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:53:27,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a950f7b-684a-438b-82ba-118b6972deb0/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:53:27,594 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a950f7b-684a-438b-82ba-118b6972deb0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:53:27,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a950f7b-684a-438b-82ba-118b6972deb0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:53:27,662 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-28 09:53:27,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-28 09:53:27,663 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-28 09:53:27,663 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-28 09:53:27,663 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-28 09:53:27,663 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-28 09:53:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:53:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:53:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:53:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 09:53:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 09:53:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:53:27,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:53:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:53:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:53:27,667 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 09:53:28,093 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:53:28,108 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 09:53:28,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:53:28 BoogieIcfgContainer [2021-10-28 09:53:28,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:53:28,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:53:28,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:53:28,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:53:28,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:53:26" (1/3) ... [2021-10-28 09:53:28,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267f7e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:53:28, skipping insertion in model container [2021-10-28 09:53:28,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:27" (2/3) ... [2021-10-28 09:53:28,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267f7e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:53:28, skipping insertion in model container [2021-10-28 09:53:28,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:53:28" (3/3) ... [2021-10-28 09:53:28,127 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-simple-equiv.wvr.c [2021-10-28 09:53:28,133 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 09:53:28,134 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:53:28,134 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:53:28,134 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 09:53:28,201 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,201 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,202 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,202 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,203 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,203 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,204 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,204 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,204 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,205 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,205 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,205 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,206 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,207 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,207 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,207 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,211 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,228 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,228 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,231 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,231 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,232 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,234 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,235 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:53:28,249 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-28 09:53:28,338 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:53:28,359 INFO L339 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:53:28,367 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-28 09:53:28,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 196 flow [2021-10-28 09:53:28,469 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2021-10-28 09:53:28,469 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-28 09:53:28,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 83 events. 2/83 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 25 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2021-10-28 09:53:28,473 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 86 transitions, 196 flow [2021-10-28 09:53:28,479 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 73 transitions, 164 flow [2021-10-28 09:53:28,512 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-10-28 09:53:28,512 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-28 09:53:28,512 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:28,513 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:53:28,514 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:53:28,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:28,521 INFO L85 PathProgramCache]: Analyzing trace with hash 431681001, now seen corresponding path program 1 times [2021-10-28 09:53:28,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:28,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478967422] [2021-10-28 09:53:28,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:28,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:29,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:29,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:29,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478967422] [2021-10-28 09:53:29,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478967422] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:29,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:29,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 09:53:29,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932276420] [2021-10-28 09:53:29,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:53:29,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:29,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:53:29,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:53:29,894 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 86 [2021-10-28 09:53:29,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 73 transitions, 164 flow. Second operand has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:29,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:29,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 86 [2021-10-28 09:53:29,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:32,859 INFO L129 PetriNetUnfolder]: 20/162 cut-off events. [2021-10-28 09:53:32,860 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-10-28 09:53:32,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 162 events. 20/162 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 435 event pairs, 4 based on Foata normal form. 3/160 useless extension candidates. Maximal degree in co-relation 161. Up to 41 conditions per place. [2021-10-28 09:53:32,866 INFO L132 encePairwiseOnDemand]: 70/86 looper letters, 17 selfloop transitions, 15 changer transitions 11/92 dead transitions. [2021-10-28 09:53:32,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 288 flow [2021-10-28 09:53:32,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 09:53:32,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-28 09:53:32,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 901 transitions. [2021-10-28 09:53:32,916 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7483388704318937 [2021-10-28 09:53:32,922 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 901 transitions. [2021-10-28 09:53:32,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 901 transitions. [2021-10-28 09:53:32,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:32,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 901 transitions. [2021-10-28 09:53:32,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 64.35714285714286) internal successors, (901), 14 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:32,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 86.0) internal successors, (1290), 15 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:32,956 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 86.0) internal successors, (1290), 15 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:32,959 INFO L186 Difference]: Start difference. First operand has 81 places, 73 transitions, 164 flow. Second operand 14 states and 901 transitions. [2021-10-28 09:53:32,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 288 flow [2021-10-28 09:53:32,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 92 transitions, 276 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-10-28 09:53:32,976 INFO L242 Difference]: Finished difference. Result has 93 places, 81 transitions, 235 flow [2021-10-28 09:53:32,979 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=235, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2021-10-28 09:53:32,980 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 12 predicate places. [2021-10-28 09:53:32,981 INFO L470 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 235 flow [2021-10-28 09:53:32,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:32,986 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:32,987 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:53:32,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:53:32,988 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:53:32,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:32,990 INFO L85 PathProgramCache]: Analyzing trace with hash -42878295, now seen corresponding path program 2 times [2021-10-28 09:53:32,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:32,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747633339] [2021-10-28 09:53:32,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:32,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:33,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:33,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747633339] [2021-10-28 09:53:33,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747633339] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:33,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:33,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:53:33,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585502680] [2021-10-28 09:53:33,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:53:33,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:33,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:53:33,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:53:33,685 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 86 [2021-10-28 09:53:33,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 235 flow. Second operand has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:33,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:33,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 86 [2021-10-28 09:53:33,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:34,183 INFO L129 PetriNetUnfolder]: 22/162 cut-off events. [2021-10-28 09:53:34,183 INFO L130 PetriNetUnfolder]: For 39/49 co-relation queries the response was YES. [2021-10-28 09:53:34,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 162 events. 22/162 cut-off events. For 39/49 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 460 event pairs, 0 based on Foata normal form. 6/165 useless extension candidates. Maximal degree in co-relation 317. Up to 46 conditions per place. [2021-10-28 09:53:34,186 INFO L132 encePairwiseOnDemand]: 74/86 looper letters, 28 selfloop transitions, 18 changer transitions 10/105 dead transitions. [2021-10-28 09:53:34,187 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 105 transitions, 451 flow [2021-10-28 09:53:34,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:53:34,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 09:53:34,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 775 transitions. [2021-10-28 09:53:34,192 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.750968992248062 [2021-10-28 09:53:34,192 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 775 transitions. [2021-10-28 09:53:34,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 775 transitions. [2021-10-28 09:53:34,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:34,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 775 transitions. [2021-10-28 09:53:34,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 64.58333333333333) internal successors, (775), 12 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:34,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:34,202 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:34,203 INFO L186 Difference]: Start difference. First operand has 93 places, 81 transitions, 235 flow. Second operand 12 states and 775 transitions. [2021-10-28 09:53:34,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 105 transitions, 451 flow [2021-10-28 09:53:34,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 105 transitions, 437 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-10-28 09:53:34,211 INFO L242 Difference]: Finished difference. Result has 98 places, 95 transitions, 376 flow [2021-10-28 09:53:34,212 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=376, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2021-10-28 09:53:34,212 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 17 predicate places. [2021-10-28 09:53:34,213 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 376 flow [2021-10-28 09:53:34,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:34,214 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:34,214 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:53:34,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:53:34,214 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:53:34,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:34,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1081434737, now seen corresponding path program 3 times [2021-10-28 09:53:34,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:34,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012600391] [2021-10-28 09:53:34,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:34,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:34,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:34,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:34,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012600391] [2021-10-28 09:53:34,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012600391] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:34,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:34,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 09:53:34,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507470611] [2021-10-28 09:53:34,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:53:34,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:34,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:53:34,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:53:34,606 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 86 [2021-10-28 09:53:34,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 95 transitions, 376 flow. Second operand has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:34,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:34,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 86 [2021-10-28 09:53:34,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:35,084 INFO L129 PetriNetUnfolder]: 18/161 cut-off events. [2021-10-28 09:53:35,084 INFO L130 PetriNetUnfolder]: For 100/128 co-relation queries the response was YES. [2021-10-28 09:53:35,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 161 events. 18/161 cut-off events. For 100/128 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 476 event pairs, 0 based on Foata normal form. 13/171 useless extension candidates. Maximal degree in co-relation 376. Up to 41 conditions per place. [2021-10-28 09:53:35,088 INFO L132 encePairwiseOnDemand]: 74/86 looper letters, 26 selfloop transitions, 19 changer transitions 7/101 dead transitions. [2021-10-28 09:53:35,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 101 transitions, 512 flow [2021-10-28 09:53:35,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:53:35,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:53:35,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 832 transitions. [2021-10-28 09:53:35,106 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7441860465116279 [2021-10-28 09:53:35,106 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 832 transitions. [2021-10-28 09:53:35,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 832 transitions. [2021-10-28 09:53:35,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:35,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 832 transitions. [2021-10-28 09:53:35,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 64.0) internal successors, (832), 13 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:35,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:35,116 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:35,116 INFO L186 Difference]: Start difference. First operand has 98 places, 95 transitions, 376 flow. Second operand 13 states and 832 transitions. [2021-10-28 09:53:35,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 101 transitions, 512 flow [2021-10-28 09:53:35,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 101 transitions, 476 flow, removed 16 selfloop flow, removed 5 redundant places. [2021-10-28 09:53:35,126 INFO L242 Difference]: Finished difference. Result has 106 places, 94 transitions, 392 flow [2021-10-28 09:53:35,127 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=392, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2021-10-28 09:53:35,127 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 25 predicate places. [2021-10-28 09:53:35,127 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 392 flow [2021-10-28 09:53:35,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:35,128 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:35,129 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:53:35,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:53:35,129 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:53:35,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:35,130 INFO L85 PathProgramCache]: Analyzing trace with hash -2061773045, now seen corresponding path program 4 times [2021-10-28 09:53:35,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:35,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206200976] [2021-10-28 09:53:35,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:35,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:35,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:35,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:35,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206200976] [2021-10-28 09:53:35,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206200976] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:35,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:35,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 09:53:35,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052418286] [2021-10-28 09:53:35,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:53:35,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:35,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:53:35,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:53:35,529 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 86 [2021-10-28 09:53:35,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 392 flow. Second operand has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:35,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:35,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 86 [2021-10-28 09:53:35,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:36,064 INFO L129 PetriNetUnfolder]: 17/172 cut-off events. [2021-10-28 09:53:36,065 INFO L130 PetriNetUnfolder]: For 136/153 co-relation queries the response was YES. [2021-10-28 09:53:36,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 172 events. 17/172 cut-off events. For 136/153 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 550 event pairs, 0 based on Foata normal form. 11/181 useless extension candidates. Maximal degree in co-relation 410. Up to 23 conditions per place. [2021-10-28 09:53:36,068 INFO L132 encePairwiseOnDemand]: 74/86 looper letters, 14 selfloop transitions, 15 changer transitions 32/110 dead transitions. [2021-10-28 09:53:36,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 110 transitions, 622 flow [2021-10-28 09:53:36,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:53:36,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:53:36,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 838 transitions. [2021-10-28 09:53:36,073 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7495527728085868 [2021-10-28 09:53:36,074 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 838 transitions. [2021-10-28 09:53:36,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 838 transitions. [2021-10-28 09:53:36,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:36,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 838 transitions. [2021-10-28 09:53:36,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 64.46153846153847) internal successors, (838), 13 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:36,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:36,083 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:36,084 INFO L186 Difference]: Start difference. First operand has 106 places, 94 transitions, 392 flow. Second operand 13 states and 838 transitions. [2021-10-28 09:53:36,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 110 transitions, 622 flow [2021-10-28 09:53:36,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 110 transitions, 531 flow, removed 14 selfloop flow, removed 14 redundant places. [2021-10-28 09:53:36,092 INFO L242 Difference]: Finished difference. Result has 106 places, 78 transitions, 289 flow [2021-10-28 09:53:36,092 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=289, PETRI_PLACES=106, PETRI_TRANSITIONS=78} [2021-10-28 09:53:36,092 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 25 predicate places. [2021-10-28 09:53:36,093 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 78 transitions, 289 flow [2021-10-28 09:53:36,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:36,094 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:36,094 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:53:36,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:53:36,094 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:53:36,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:36,095 INFO L85 PathProgramCache]: Analyzing trace with hash 847406927, now seen corresponding path program 5 times [2021-10-28 09:53:36,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:36,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583670508] [2021-10-28 09:53:36,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:36,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:36,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:36,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:36,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583670508] [2021-10-28 09:53:36,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583670508] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:36,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:36,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 09:53:36,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529645407] [2021-10-28 09:53:36,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:53:36,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:36,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:53:36,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:53:36,469 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 86 [2021-10-28 09:53:36,470 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 78 transitions, 289 flow. Second operand has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:36,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:36,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 86 [2021-10-28 09:53:36,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:36,948 INFO L129 PetriNetUnfolder]: 2/102 cut-off events. [2021-10-28 09:53:36,948 INFO L130 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2021-10-28 09:53:36,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 102 events. 2/102 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 163 event pairs, 0 based on Foata normal form. 1/103 useless extension candidates. Maximal degree in co-relation 202. Up to 16 conditions per place. [2021-10-28 09:53:36,949 INFO L132 encePairwiseOnDemand]: 74/86 looper letters, 14 selfloop transitions, 8 changer transitions 10/81 dead transitions. [2021-10-28 09:53:36,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 81 transitions, 363 flow [2021-10-28 09:53:36,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:53:36,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 09:53:36,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 763 transitions. [2021-10-28 09:53:36,955 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7393410852713178 [2021-10-28 09:53:36,955 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 763 transitions. [2021-10-28 09:53:36,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 763 transitions. [2021-10-28 09:53:36,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:36,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 763 transitions. [2021-10-28 09:53:36,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 63.583333333333336) internal successors, (763), 12 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:36,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:36,964 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:36,964 INFO L186 Difference]: Start difference. First operand has 106 places, 78 transitions, 289 flow. Second operand 12 states and 763 transitions. [2021-10-28 09:53:36,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 81 transitions, 363 flow [2021-10-28 09:53:36,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 81 transitions, 297 flow, removed 14 selfloop flow, removed 16 redundant places. [2021-10-28 09:53:36,970 INFO L242 Difference]: Finished difference. Result has 99 places, 71 transitions, 200 flow [2021-10-28 09:53:36,970 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=200, PETRI_PLACES=99, PETRI_TRANSITIONS=71} [2021-10-28 09:53:36,971 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 18 predicate places. [2021-10-28 09:53:36,971 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 71 transitions, 200 flow [2021-10-28 09:53:36,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:36,972 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:53:36,972 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:53:36,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:53:36,973 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:53:36,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:36,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1374337329, now seen corresponding path program 6 times [2021-10-28 09:53:36,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:53:36,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770145354] [2021-10-28 09:53:36,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:36,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:53:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:37,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:53:37,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770145354] [2021-10-28 09:53:37,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770145354] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:37,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:37,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 09:53:37,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501772552] [2021-10-28 09:53:37,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:53:37,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:37,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:53:37,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:53:37,313 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 86 [2021-10-28 09:53:37,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 71 transitions, 200 flow. Second operand has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:37,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:53:37,315 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 86 [2021-10-28 09:53:37,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:53:37,625 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2021-10-28 09:53:37,626 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-10-28 09:53:37,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 74 events. 1/74 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 1/75 useless extension candidates. Maximal degree in co-relation 124. Up to 7 conditions per place. [2021-10-28 09:53:37,626 INFO L132 encePairwiseOnDemand]: 74/86 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2021-10-28 09:53:37,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 69 transitions, 236 flow [2021-10-28 09:53:37,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:53:37,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 09:53:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 754 transitions. [2021-10-28 09:53:37,631 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7306201550387597 [2021-10-28 09:53:37,631 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 754 transitions. [2021-10-28 09:53:37,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 754 transitions. [2021-10-28 09:53:37,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:53:37,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 754 transitions. [2021-10-28 09:53:37,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 62.833333333333336) internal successors, (754), 12 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:37,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:37,639 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:37,640 INFO L186 Difference]: Start difference. First operand has 99 places, 71 transitions, 200 flow. Second operand 12 states and 754 transitions. [2021-10-28 09:53:37,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 69 transitions, 236 flow [2021-10-28 09:53:37,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 69 transitions, 194 flow, removed 6 selfloop flow, removed 15 redundant places. [2021-10-28 09:53:37,643 INFO L242 Difference]: Finished difference. Result has 85 places, 0 transitions, 0 flow [2021-10-28 09:53:37,643 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=85, PETRI_TRANSITIONS=0} [2021-10-28 09:53:37,644 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 4 predicate places. [2021-10-28 09:53:37,644 INFO L470 AbstractCegarLoop]: Abstraction has has 85 places, 0 transitions, 0 flow [2021-10-28 09:53:37,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:37,648 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:53:37,648 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 09:53:37,649 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 09:53:37,649 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 09:53:37,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:53:37,653 INFO L731 BasicCegarLoop]: Path program histogram: [6] [2021-10-28 09:53:37,656 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 09:53:37,657 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:53:37,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:53:37 BasicIcfg [2021-10-28 09:53:37,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:53:37,660 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:53:37,661 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:53:37,661 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:53:37,662 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:53:28" (3/4) ... [2021-10-28 09:53:37,665 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:53:37,673 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-28 09:53:37,673 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-28 09:53:37,673 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-28 09:53:37,679 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-28 09:53:37,679 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:53:37,680 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:53:37,680 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:53:37,726 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a950f7b-684a-438b-82ba-118b6972deb0/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:53:37,726 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:53:37,728 INFO L168 Benchmark]: Toolchain (without parser) took 10742.91 ms. Allocated memory was 83.9 MB in the beginning and 142.6 MB in the end (delta: 58.7 MB). Free memory was 47.2 MB in the beginning and 102.2 MB in the end (delta: -55.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:37,729 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 83.9 MB. Free memory is still 63.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:53:37,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 433.17 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 47.0 MB in the beginning and 89.0 MB in the end (delta: -41.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:37,730 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.72 ms. Allocated memory is still 113.2 MB. Free memory was 89.0 MB in the beginning and 87.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:37,731 INFO L168 Benchmark]: Boogie Preprocessor took 59.14 ms. Allocated memory is still 113.2 MB. Free memory was 87.2 MB in the beginning and 86.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:37,732 INFO L168 Benchmark]: RCFGBuilder took 566.13 ms. Allocated memory is still 113.2 MB. Free memory was 86.2 MB in the beginning and 73.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:37,733 INFO L168 Benchmark]: TraceAbstraction took 9546.18 ms. Allocated memory was 113.2 MB in the beginning and 142.6 MB in the end (delta: 29.4 MB). Free memory was 73.3 MB in the beginning and 105.3 MB in the end (delta: -32.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:53:37,733 INFO L168 Benchmark]: Witness Printer took 65.98 ms. Allocated memory is still 142.6 MB. Free memory was 105.3 MB in the beginning and 102.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:37,737 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 83.9 MB. Free memory is still 63.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 433.17 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 47.0 MB in the beginning and 89.0 MB in the end (delta: -41.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.72 ms. Allocated memory is still 113.2 MB. Free memory was 89.0 MB in the beginning and 87.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.14 ms. Allocated memory is still 113.2 MB. Free memory was 87.2 MB in the beginning and 86.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 566.13 ms. Allocated memory is still 113.2 MB. Free memory was 86.2 MB in the beginning and 73.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9546.18 ms. Allocated memory was 113.2 MB in the beginning and 142.6 MB in the end (delta: 29.4 MB). Free memory was 73.3 MB in the beginning and 105.3 MB in the end (delta: -32.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 65.98 ms. Allocated memory is still 142.6 MB. Free memory was 105.3 MB in the beginning and 102.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 82]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 103 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 102 SDslu, 237 SDs, 0 SdLazy, 1046 SolverSat, 92 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 14 SyntacticMatches, 11 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=392occurred in iteration=3, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 414 NumberOfCodeBlocks, 414 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 408 ConstructedInterpolants, 0 QuantifiedInterpolants, 7839 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 09:53:37,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a950f7b-684a-438b-82ba-118b6972deb0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...