./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i --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_6897ba67-67a0-462b-a9bd-ba5d23e68d2c/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6897ba67-67a0-462b-a9bd-ba5d23e68d2c/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_6897ba67-67a0-462b-a9bd-ba5d23e68d2c/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6897ba67-67a0-462b-a9bd-ba5d23e68d2c/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6897ba67-67a0-462b-a9bd-ba5d23e68d2c/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_6897ba67-67a0-462b-a9bd-ba5d23e68d2c/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 e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 09:08:49,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:08:49,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:08:49,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:08:49,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:08:49,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:08:49,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:08:49,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:08:49,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:08:49,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:08:49,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:08:49,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:08:49,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:08:49,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:08:49,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:08:49,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:08:49,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:08:49,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:08:49,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:08:49,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:08:49,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:08:49,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:08:49,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:08:49,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:08:49,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:08:49,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:08:49,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:08:49,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:08:49,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:08:49,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:08:49,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:08:49,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:08:49,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:08:49,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:08:49,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:08:49,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:08:49,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:08:49,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:08:49,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:08:49,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:08:49,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:08:49,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6897ba67-67a0-462b-a9bd-ba5d23e68d2c/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:08:49,685 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:08:49,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:08:49,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:08:49,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:08:49,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:08:49,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:08:49,688 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:08:49,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:08:49,689 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:08:49,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:08:49,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:08:49,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:08:49,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:08:49,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:08:49,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:08:49,691 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:08:49,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:08:49,691 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:08:49,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:08:49,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:08:49,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:08:49,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:08:49,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:08:49,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:08:49,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:08:49,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:08:49,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:08:49,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:08:49,694 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:08:49,694 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:08:49,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:08:49,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:08:49,695 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_6897ba67-67a0-462b-a9bd-ba5d23e68d2c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6897ba67-67a0-462b-a9bd-ba5d23e68d2c/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad [2021-10-28 09:08:50,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:08:50,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:08:50,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:08:50,066 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:08:50,068 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:08:50,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6897ba67-67a0-462b-a9bd-ba5d23e68d2c/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-28 09:08:50,154 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6897ba67-67a0-462b-a9bd-ba5d23e68d2c/bin/uautomizer-UnR33cPsHg/data/aaa388f49/8a62c6e40c9b43c9b1c54ad54049ba4b/FLAGf834a3da1 [2021-10-28 09:08:50,900 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:08:50,901 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6897ba67-67a0-462b-a9bd-ba5d23e68d2c/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-28 09:08:50,928 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6897ba67-67a0-462b-a9bd-ba5d23e68d2c/bin/uautomizer-UnR33cPsHg/data/aaa388f49/8a62c6e40c9b43c9b1c54ad54049ba4b/FLAGf834a3da1 [2021-10-28 09:08:51,184 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6897ba67-67a0-462b-a9bd-ba5d23e68d2c/bin/uautomizer-UnR33cPsHg/data/aaa388f49/8a62c6e40c9b43c9b1c54ad54049ba4b [2021-10-28 09:08:51,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:08:51,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:08:51,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:08:51,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:08:51,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:08:51,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:08:51" (1/1) ... [2021-10-28 09:08:51,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16ca9ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:51, skipping insertion in model container [2021-10-28 09:08:51,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:08:51" (1/1) ... [2021-10-28 09:08:51,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:08:51,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:08:51,552 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_6897ba67-67a0-462b-a9bd-ba5d23e68d2c/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-28 09:08:51,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:08:51,903 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:08:51,922 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_6897ba67-67a0-462b-a9bd-ba5d23e68d2c/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-28 09:08:52,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:08:52,063 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:08:52,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:52 WrapperNode [2021-10-28 09:08:52,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:08:52,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:08:52,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:08:52,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:08:52,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:52" (1/1) ... [2021-10-28 09:08:52,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:52" (1/1) ... [2021-10-28 09:08:52,163 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:08:52,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:08:52,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:08:52,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:08:52,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:52" (1/1) ... [2021-10-28 09:08:52,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:52" (1/1) ... [2021-10-28 09:08:52,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:52" (1/1) ... [2021-10-28 09:08:52,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:52" (1/1) ... [2021-10-28 09:08:52,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:52" (1/1) ... [2021-10-28 09:08:52,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:52" (1/1) ... [2021-10-28 09:08:52,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:52" (1/1) ... [2021-10-28 09:08:52,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:08:52,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:08:52,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:08:52,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:08:52,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:52" (1/1) ... [2021-10-28 09:08:52,246 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:08:52,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6897ba67-67a0-462b-a9bd-ba5d23e68d2c/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:52,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6897ba67-67a0-462b-a9bd-ba5d23e68d2c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:52,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6897ba67-67a0-462b-a9bd-ba5d23e68d2c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:08:52,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:08:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 09:08:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:08:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:08:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-28 09:08:52,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-28 09:08:52,344 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-28 09:08:52,344 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-28 09:08:52,344 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-28 09:08:52,344 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-28 09:08:52,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:08:52,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 09:08:52,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:08:52,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:08:52,348 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 09:08:52,819 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:08:52,823 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 09:08:52,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:08:52 BoogieIcfgContainer [2021-10-28 09:08:52,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:08:52,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:08:52,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:08:52,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:08:52,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:08:51" (1/3) ... [2021-10-28 09:08:52,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb21f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:08:52, skipping insertion in model container [2021-10-28 09:08:52,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:52" (2/3) ... [2021-10-28 09:08:52,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb21f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:08:52, skipping insertion in model container [2021-10-28 09:08:52,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:08:52" (3/3) ... [2021-10-28 09:08:52,840 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-28 09:08:52,850 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 09:08:52,850 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:08:52,850 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:08:52,851 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 09:08:52,903 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,903 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,904 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,904 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,904 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,905 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,905 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,905 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,906 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,906 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,906 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,906 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,907 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,908 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,908 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,908 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,910 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,911 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,912 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,912 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,913 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,913 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,914 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,914 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,920 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,921 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,921 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,922 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,923 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,924 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,925 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,925 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,925 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,926 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,930 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,930 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,930 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,931 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,937 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,937 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,937 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,938 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,942 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,945 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,945 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,946 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:08:52,949 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-28 09:08:53,028 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:08:53,039 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 09:08:53,040 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-28 09:08:53,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-10-28 09:08:53,162 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-10-28 09:08:53,163 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:08:53,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-10-28 09:08:53,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2021-10-28 09:08:53,177 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2021-10-28 09:08:53,221 INFO L129 PetriNetUnfolder]: 1/67 cut-off events. [2021-10-28 09:08:53,222 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:08:53,222 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:08:53,223 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] [2021-10-28 09:08:53,224 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 09:08:53,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:53,232 INFO L85 PathProgramCache]: Analyzing trace with hash -604234348, now seen corresponding path program 1 times [2021-10-28 09:08:53,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:53,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618243688] [2021-10-28 09:08:53,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:53,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:53,864 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 09:08:53,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:53,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618243688] [2021-10-28 09:08:53,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618243688] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:08:53,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:08:53,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:08:53,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059090651] [2021-10-28 09:08:53,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:08:53,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:08:53,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:08:53,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:08:53,916 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 83 [2021-10-28 09:08:53,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 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 09:08:53,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:08:53,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 83 [2021-10-28 09:08:53,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:08:54,159 INFO L129 PetriNetUnfolder]: 3/82 cut-off events. [2021-10-28 09:08:54,159 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:08:54,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 82 events. 3/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 4/85 useless extension candidates. Maximal degree in co-relation 81. Up to 7 conditions per place. [2021-10-28 09:08:54,162 INFO L132 encePairwiseOnDemand]: 76/83 looper letters, 6 selfloop transitions, 2 changer transitions 11/77 dead transitions. [2021-10-28 09:08:54,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 77 transitions, 199 flow [2021-10-28 09:08:54,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:08:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:08:54,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 661 transitions. [2021-10-28 09:08:54,196 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8848728246318608 [2021-10-28 09:08:54,197 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 661 transitions. [2021-10-28 09:08:54,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 661 transitions. [2021-10-28 09:08:54,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:08:54,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 661 transitions. [2021-10-28 09:08:54,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.44444444444444) internal successors, (661), 9 states have internal predecessors, (661), 0 states have call successors, (0), 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 09:08:54,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 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 09:08:54,231 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 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 09:08:54,234 INFO L186 Difference]: Start difference. First operand has 77 places, 68 transitions, 145 flow. Second operand 9 states and 661 transitions. [2021-10-28 09:08:54,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 77 transitions, 199 flow [2021-10-28 09:08:54,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 196 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 09:08:54,244 INFO L242 Difference]: Finished difference. Result has 89 places, 66 transitions, 158 flow [2021-10-28 09:08:54,247 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=158, PETRI_PLACES=89, PETRI_TRANSITIONS=66} [2021-10-28 09:08:54,252 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2021-10-28 09:08:54,252 INFO L470 AbstractCegarLoop]: Abstraction has has 89 places, 66 transitions, 158 flow [2021-10-28 09:08:54,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 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 09:08:54,253 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:08:54,253 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] [2021-10-28 09:08:54,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:08:54,254 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 09:08:54,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:54,254 INFO L85 PathProgramCache]: Analyzing trace with hash -847140621, now seen corresponding path program 1 times [2021-10-28 09:08:54,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:54,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271083238] [2021-10-28 09:08:54,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:54,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:54,488 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 09:08:54,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:54,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271083238] [2021-10-28 09:08:54,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271083238] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:08:54,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:08:54,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:08:54,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783466772] [2021-10-28 09:08:54,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:08:54,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:08:54,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:08:54,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:08:54,496 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 83 [2021-10-28 09:08:54,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 66 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 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 09:08:54,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:08:54,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 83 [2021-10-28 09:08:54,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:08:54,686 INFO L129 PetriNetUnfolder]: 3/89 cut-off events. [2021-10-28 09:08:54,687 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-10-28 09:08:54,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 89 events. 3/89 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 108 event pairs, 0 based on Foata normal form. 2/91 useless extension candidates. Maximal degree in co-relation 128. Up to 7 conditions per place. [2021-10-28 09:08:54,689 INFO L132 encePairwiseOnDemand]: 77/83 looper letters, 6 selfloop transitions, 2 changer transitions 10/76 dead transitions. [2021-10-28 09:08:54,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 76 transitions, 232 flow [2021-10-28 09:08:54,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:08:54,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:08:54,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 659 transitions. [2021-10-28 09:08:54,703 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8821954484605087 [2021-10-28 09:08:54,706 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 659 transitions. [2021-10-28 09:08:54,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 659 transitions. [2021-10-28 09:08:54,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:08:54,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 659 transitions. [2021-10-28 09:08:54,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.22222222222223) internal successors, (659), 9 states have internal predecessors, (659), 0 states have call successors, (0), 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 09:08:54,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 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 09:08:54,720 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 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 09:08:54,721 INFO L186 Difference]: Start difference. First operand has 89 places, 66 transitions, 158 flow. Second operand 9 states and 659 transitions. [2021-10-28 09:08:54,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 76 transitions, 232 flow [2021-10-28 09:08:54,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 76 transitions, 200 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-10-28 09:08:54,725 INFO L242 Difference]: Finished difference. Result has 89 places, 66 transitions, 162 flow [2021-10-28 09:08:54,726 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=162, PETRI_PLACES=89, PETRI_TRANSITIONS=66} [2021-10-28 09:08:54,726 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2021-10-28 09:08:54,727 INFO L470 AbstractCegarLoop]: Abstraction has has 89 places, 66 transitions, 162 flow [2021-10-28 09:08:54,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 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 09:08:54,728 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:08:54,728 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] [2021-10-28 09:08:54,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:08:54,728 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 09:08:54,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:54,729 INFO L85 PathProgramCache]: Analyzing trace with hash 185174198, now seen corresponding path program 1 times [2021-10-28 09:08:54,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:54,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255821786] [2021-10-28 09:08:54,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:54,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:54,998 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 09:08:54,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:54,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255821786] [2021-10-28 09:08:55,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255821786] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:08:55,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:08:55,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:08:55,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975252542] [2021-10-28 09:08:55,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:08:55,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:08:55,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:08:55,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:08:55,007 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 83 [2021-10-28 09:08:55,008 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 66 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 0 states have call successors, (0), 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 09:08:55,009 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:08:55,009 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 83 [2021-10-28 09:08:55,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:08:55,291 INFO L129 PetriNetUnfolder]: 25/139 cut-off events. [2021-10-28 09:08:55,291 INFO L130 PetriNetUnfolder]: For 43/67 co-relation queries the response was YES. [2021-10-28 09:08:55,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 139 events. 25/139 cut-off events. For 43/67 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 352 event pairs, 1 based on Foata normal form. 4/137 useless extension candidates. Maximal degree in co-relation 246. Up to 19 conditions per place. [2021-10-28 09:08:55,297 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 9 selfloop transitions, 4 changer transitions 18/86 dead transitions. [2021-10-28 09:08:55,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 86 transitions, 291 flow [2021-10-28 09:08:55,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:08:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:08:55,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 713 transitions. [2021-10-28 09:08:55,302 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8590361445783132 [2021-10-28 09:08:55,303 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 713 transitions. [2021-10-28 09:08:55,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 713 transitions. [2021-10-28 09:08:55,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:08:55,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 713 transitions. [2021-10-28 09:08:55,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 71.3) internal successors, (713), 10 states have internal predecessors, (713), 0 states have call successors, (0), 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 09:08:55,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 0 states have call successors, (0), 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 09:08:55,314 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 0 states have call successors, (0), 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 09:08:55,314 INFO L186 Difference]: Start difference. First operand has 89 places, 66 transitions, 162 flow. Second operand 10 states and 713 transitions. [2021-10-28 09:08:55,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 86 transitions, 291 flow [2021-10-28 09:08:55,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 86 transitions, 257 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-10-28 09:08:55,324 INFO L242 Difference]: Finished difference. Result has 92 places, 66 transitions, 176 flow [2021-10-28 09:08:55,325 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=176, PETRI_PLACES=92, PETRI_TRANSITIONS=66} [2021-10-28 09:08:55,325 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 15 predicate places. [2021-10-28 09:08:55,326 INFO L470 AbstractCegarLoop]: Abstraction has has 92 places, 66 transitions, 176 flow [2021-10-28 09:08:55,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 0 states have call successors, (0), 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 09:08:55,327 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:08:55,327 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] [2021-10-28 09:08:55,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:08:55,332 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 09:08:55,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:55,334 INFO L85 PathProgramCache]: Analyzing trace with hash -582754893, now seen corresponding path program 1 times [2021-10-28 09:08:55,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:55,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821816274] [2021-10-28 09:08:55,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:55,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:55,543 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 09:08:55,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:55,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821816274] [2021-10-28 09:08:55,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821816274] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:08:55,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:08:55,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:08:55,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586239289] [2021-10-28 09:08:55,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:08:55,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:08:55,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:08:55,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:08:55,563 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-10-28 09:08:55,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 66 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 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 09:08:55,566 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:08:55,566 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-10-28 09:08:55,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:08:55,832 INFO L129 PetriNetUnfolder]: 4/87 cut-off events. [2021-10-28 09:08:55,832 INFO L130 PetriNetUnfolder]: For 59/71 co-relation queries the response was YES. [2021-10-28 09:08:55,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 87 events. 4/87 cut-off events. For 59/71 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 2/88 useless extension candidates. Maximal degree in co-relation 148. Up to 7 conditions per place. [2021-10-28 09:08:55,834 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 6 selfloop transitions, 4 changer transitions 12/78 dead transitions. [2021-10-28 09:08:55,834 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 78 transitions, 277 flow [2021-10-28 09:08:55,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:08:55,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:08:55,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 714 transitions. [2021-10-28 09:08:55,842 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8602409638554217 [2021-10-28 09:08:55,842 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 714 transitions. [2021-10-28 09:08:55,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 714 transitions. [2021-10-28 09:08:55,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:08:55,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 714 transitions. [2021-10-28 09:08:55,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 71.4) internal successors, (714), 10 states have internal predecessors, (714), 0 states have call successors, (0), 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 09:08:55,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 0 states have call successors, (0), 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 09:08:55,862 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 0 states have call successors, (0), 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 09:08:55,862 INFO L186 Difference]: Start difference. First operand has 92 places, 66 transitions, 176 flow. Second operand 10 states and 714 transitions. [2021-10-28 09:08:55,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 78 transitions, 277 flow [2021-10-28 09:08:55,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 78 transitions, 227 flow, removed 20 selfloop flow, removed 10 redundant places. [2021-10-28 09:08:55,868 INFO L242 Difference]: Finished difference. Result has 93 places, 66 transitions, 180 flow [2021-10-28 09:08:55,883 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=180, PETRI_PLACES=93, PETRI_TRANSITIONS=66} [2021-10-28 09:08:55,884 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 16 predicate places. [2021-10-28 09:08:55,884 INFO L470 AbstractCegarLoop]: Abstraction has has 93 places, 66 transitions, 180 flow [2021-10-28 09:08:55,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 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 09:08:55,885 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:08:55,886 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] [2021-10-28 09:08:55,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:08:55,886 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 09:08:55,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:55,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1765133586, now seen corresponding path program 1 times [2021-10-28 09:08:55,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:55,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766573491] [2021-10-28 09:08:55,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:55,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:56,009 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 09:08:56,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:56,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766573491] [2021-10-28 09:08:56,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766573491] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:08:56,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:08:56,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:08:56,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864696840] [2021-10-28 09:08:56,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:08:56,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:08:56,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:08:56,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:08:56,015 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-10-28 09:08:56,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 66 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 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 09:08:56,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:08:56,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-10-28 09:08:56,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:08:56,183 INFO L129 PetriNetUnfolder]: 91/295 cut-off events. [2021-10-28 09:08:56,187 INFO L130 PetriNetUnfolder]: For 69/70 co-relation queries the response was YES. [2021-10-28 09:08:56,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 295 events. 91/295 cut-off events. For 69/70 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1378 event pairs, 2 based on Foata normal form. 8/296 useless extension candidates. Maximal degree in co-relation 521. Up to 81 conditions per place. [2021-10-28 09:08:56,195 INFO L132 encePairwiseOnDemand]: 74/83 looper letters, 10 selfloop transitions, 6 changer transitions 19/91 dead transitions. [2021-10-28 09:08:56,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 91 transitions, 300 flow [2021-10-28 09:08:56,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:08:56,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:08:56,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 658 transitions. [2021-10-28 09:08:56,207 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8808567603748326 [2021-10-28 09:08:56,208 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 658 transitions. [2021-10-28 09:08:56,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 658 transitions. [2021-10-28 09:08:56,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:08:56,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 658 transitions. [2021-10-28 09:08:56,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.11111111111111) internal successors, (658), 9 states have internal predecessors, (658), 0 states have call successors, (0), 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 09:08:56,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 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 09:08:56,219 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 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 09:08:56,220 INFO L186 Difference]: Start difference. First operand has 93 places, 66 transitions, 180 flow. Second operand 9 states and 658 transitions. [2021-10-28 09:08:56,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 91 transitions, 300 flow [2021-10-28 09:08:56,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 91 transitions, 270 flow, removed 9 selfloop flow, removed 11 redundant places. [2021-10-28 09:08:56,234 INFO L242 Difference]: Finished difference. Result has 90 places, 69 transitions, 206 flow [2021-10-28 09:08:56,235 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=206, PETRI_PLACES=90, PETRI_TRANSITIONS=69} [2021-10-28 09:08:56,235 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2021-10-28 09:08:56,235 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 69 transitions, 206 flow [2021-10-28 09:08:56,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 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 09:08:56,237 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:08:56,238 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] [2021-10-28 09:08:56,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:08:56,238 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 09:08:56,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:56,239 INFO L85 PathProgramCache]: Analyzing trace with hash -400580434, now seen corresponding path program 1 times [2021-10-28 09:08:56,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:56,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195745488] [2021-10-28 09:08:56,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:56,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:56,404 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 09:08:56,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:56,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195745488] [2021-10-28 09:08:56,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195745488] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:08:56,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:08:56,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:08:56,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89497748] [2021-10-28 09:08:56,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:08:56,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:08:56,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:08:56,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:08:56,415 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-10-28 09:08:56,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 69 transitions, 206 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 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 09:08:56,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:08:56,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-10-28 09:08:56,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:08:56,656 INFO L129 PetriNetUnfolder]: 52/203 cut-off events. [2021-10-28 09:08:56,659 INFO L130 PetriNetUnfolder]: For 278/317 co-relation queries the response was YES. [2021-10-28 09:08:56,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 203 events. 52/203 cut-off events. For 278/317 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 724 event pairs, 0 based on Foata normal form. 14/215 useless extension candidates. Maximal degree in co-relation 551. Up to 75 conditions per place. [2021-10-28 09:08:56,665 INFO L132 encePairwiseOnDemand]: 74/83 looper letters, 10 selfloop transitions, 9 changer transitions 19/94 dead transitions. [2021-10-28 09:08:56,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 94 transitions, 459 flow [2021-10-28 09:08:56,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:08:56,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:08:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 730 transitions. [2021-10-28 09:08:56,671 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8795180722891566 [2021-10-28 09:08:56,671 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 730 transitions. [2021-10-28 09:08:56,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 730 transitions. [2021-10-28 09:08:56,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:08:56,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 730 transitions. [2021-10-28 09:08:56,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 0 states have call successors, (0), 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 09:08:56,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 0 states have call successors, (0), 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 09:08:56,684 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 0 states have call successors, (0), 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 09:08:56,685 INFO L186 Difference]: Start difference. First operand has 90 places, 69 transitions, 206 flow. Second operand 10 states and 730 transitions. [2021-10-28 09:08:56,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 94 transitions, 459 flow [2021-10-28 09:08:56,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 94 transitions, 435 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-10-28 09:08:56,703 INFO L242 Difference]: Finished difference. Result has 96 places, 72 transitions, 274 flow [2021-10-28 09:08:56,703 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=274, PETRI_PLACES=96, PETRI_TRANSITIONS=72} [2021-10-28 09:08:56,704 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 19 predicate places. [2021-10-28 09:08:56,704 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 72 transitions, 274 flow [2021-10-28 09:08:56,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 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 09:08:56,706 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:08:56,706 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] [2021-10-28 09:08:56,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:08:56,707 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:08:56,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:56,708 INFO L85 PathProgramCache]: Analyzing trace with hash 36240748, now seen corresponding path program 1 times [2021-10-28 09:08:56,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:56,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160888532] [2021-10-28 09:08:56,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:56,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:56,939 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 09:08:56,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:56,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160888532] [2021-10-28 09:08:56,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160888532] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:08:56,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:08:56,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:08:56,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232526065] [2021-10-28 09:08:56,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:08:56,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:08:56,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:08:56,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:08:56,945 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-10-28 09:08:56,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 72 transitions, 274 flow. Second operand has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 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 09:08:56,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:08:56,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-10-28 09:08:56,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:08:57,126 INFO L129 PetriNetUnfolder]: 16/112 cut-off events. [2021-10-28 09:08:57,126 INFO L130 PetriNetUnfolder]: For 390/436 co-relation queries the response was YES. [2021-10-28 09:08:57,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 112 events. 16/112 cut-off events. For 390/436 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 215 event pairs, 0 based on Foata normal form. 14/125 useless extension candidates. Maximal degree in co-relation 331. Up to 30 conditions per place. [2021-10-28 09:08:57,128 INFO L132 encePairwiseOnDemand]: 74/83 looper letters, 4 selfloop transitions, 12 changer transitions 13/85 dead transitions. [2021-10-28 09:08:57,128 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 85 transitions, 458 flow [2021-10-28 09:08:57,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:08:57,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 09:08:57,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 790 transitions. [2021-10-28 09:08:57,132 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8652792990142387 [2021-10-28 09:08:57,133 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 790 transitions. [2021-10-28 09:08:57,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 790 transitions. [2021-10-28 09:08:57,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:08:57,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 790 transitions. [2021-10-28 09:08:57,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 71.81818181818181) internal successors, (790), 11 states have internal predecessors, (790), 0 states have call successors, (0), 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 09:08:57,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 83.0) internal successors, (996), 12 states have internal predecessors, (996), 0 states have call successors, (0), 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 09:08:57,141 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 83.0) internal successors, (996), 12 states have internal predecessors, (996), 0 states have call successors, (0), 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 09:08:57,142 INFO L186 Difference]: Start difference. First operand has 96 places, 72 transitions, 274 flow. Second operand 11 states and 790 transitions. [2021-10-28 09:08:57,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 85 transitions, 458 flow [2021-10-28 09:08:57,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 85 transitions, 359 flow, removed 39 selfloop flow, removed 10 redundant places. [2021-10-28 09:08:57,147 INFO L242 Difference]: Finished difference. Result has 98 places, 72 transitions, 260 flow [2021-10-28 09:08:57,148 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=260, PETRI_PLACES=98, PETRI_TRANSITIONS=72} [2021-10-28 09:08:57,148 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 21 predicate places. [2021-10-28 09:08:57,148 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 72 transitions, 260 flow [2021-10-28 09:08:57,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 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 09:08:57,149 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:08:57,150 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] [2021-10-28 09:08:57,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:08:57,150 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:08:57,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:57,151 INFO L85 PathProgramCache]: Analyzing trace with hash -391479213, now seen corresponding path program 1 times [2021-10-28 09:08:57,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:57,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753268518] [2021-10-28 09:08:57,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:57,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:57,263 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 09:08:57,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:57,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753268518] [2021-10-28 09:08:57,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753268518] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:08:57,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:08:57,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:08:57,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167961178] [2021-10-28 09:08:57,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:08:57,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:08:57,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:08:57,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:08:57,268 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 83 [2021-10-28 09:08:57,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 72 transitions, 260 flow. Second operand has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 0 states have call successors, (0), 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 09:08:57,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:08:57,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 83 [2021-10-28 09:08:57,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:08:57,367 INFO L129 PetriNetUnfolder]: 5/81 cut-off events. [2021-10-28 09:08:57,367 INFO L130 PetriNetUnfolder]: For 69/75 co-relation queries the response was YES. [2021-10-28 09:08:57,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 81 events. 5/81 cut-off events. For 69/75 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 80 event pairs, 0 based on Foata normal form. 2/82 useless extension candidates. Maximal degree in co-relation 149. Up to 11 conditions per place. [2021-10-28 09:08:57,368 INFO L132 encePairwiseOnDemand]: 77/83 looper letters, 0 selfloop transitions, 0 changer transitions 70/70 dead transitions. [2021-10-28 09:08:57,368 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 70 transitions, 276 flow [2021-10-28 09:08:57,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:08:57,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 09:08:57,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 487 transitions. [2021-10-28 09:08:57,370 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8382099827882961 [2021-10-28 09:08:57,370 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 487 transitions. [2021-10-28 09:08:57,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 487 transitions. [2021-10-28 09:08:57,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:08:57,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 487 transitions. [2021-10-28 09:08:57,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 0 states have call successors, (0), 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 09:08:57,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 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 09:08:57,375 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 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 09:08:57,375 INFO L186 Difference]: Start difference. First operand has 98 places, 72 transitions, 260 flow. Second operand 7 states and 487 transitions. [2021-10-28 09:08:57,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 70 transitions, 276 flow [2021-10-28 09:08:57,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 70 transitions, 194 flow, removed 22 selfloop flow, removed 15 redundant places. [2021-10-28 09:08:57,378 INFO L242 Difference]: Finished difference. Result has 83 places, 0 transitions, 0 flow [2021-10-28 09:08:57,378 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=83, PETRI_TRANSITIONS=0} [2021-10-28 09:08:57,378 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2021-10-28 09:08:57,379 INFO L470 AbstractCegarLoop]: Abstraction has has 83 places, 0 transitions, 0 flow [2021-10-28 09:08:57,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 0 states have call successors, (0), 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 09:08:57,383 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:08:57,384 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 09:08:57,384 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 09:08:57,384 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 09:08:57,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:08:57,389 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:08:57,392 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 09:08:57,392 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:08:57,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:08:57 BasicIcfg [2021-10-28 09:08:57,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:08:57,398 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:08:57,398 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:08:57,398 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:08:57,399 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:08:52" (3/4) ... [2021-10-28 09:08:57,407 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:08:57,415 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-28 09:08:57,415 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-28 09:08:57,415 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-28 09:08:57,423 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-28 09:08:57,424 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:08:57,424 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:08:57,424 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:08:57,496 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6897ba67-67a0-462b-a9bd-ba5d23e68d2c/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:08:57,496 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:08:57,498 INFO L168 Benchmark]: Toolchain (without parser) took 6308.03 ms. Allocated memory was 86.0 MB in the beginning and 134.2 MB in the end (delta: 48.2 MB). Free memory was 48.7 MB in the beginning and 107.0 MB in the end (delta: -58.3 MB). Peak memory consumption was 60.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:08:57,499 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 86.0 MB. Free memory was 66.2 MB in the beginning and 66.1 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:08:57,500 INFO L168 Benchmark]: CACSL2BoogieTranslator took 874.11 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 48.5 MB in the beginning and 77.1 MB in the end (delta: -28.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:08:57,500 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.75 ms. Allocated memory is still 111.1 MB. Free memory was 77.1 MB in the beginning and 75.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:08:57,501 INFO L168 Benchmark]: Boogie Preprocessor took 57.02 ms. Allocated memory is still 111.1 MB. Free memory was 75.0 MB in the beginning and 73.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:08:57,501 INFO L168 Benchmark]: RCFGBuilder took 605.99 ms. Allocated memory is still 111.1 MB. Free memory was 73.9 MB in the beginning and 61.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:08:57,502 INFO L168 Benchmark]: TraceAbstraction took 4567.26 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 60.8 MB in the beginning and 38.4 MB in the end (delta: 22.4 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:08:57,502 INFO L168 Benchmark]: Witness Printer took 98.18 ms. Allocated memory is still 134.2 MB. Free memory was 38.4 MB in the beginning and 107.0 MB in the end (delta: -68.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:08:57,507 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 86.0 MB. Free memory was 66.2 MB in the beginning and 66.1 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 874.11 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 48.5 MB in the beginning and 77.1 MB in the end (delta: -28.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 96.75 ms. Allocated memory is still 111.1 MB. Free memory was 77.1 MB in the beginning and 75.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.02 ms. Allocated memory is still 111.1 MB. Free memory was 75.0 MB in the beginning and 73.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 605.99 ms. Allocated memory is still 111.1 MB. Free memory was 73.9 MB in the beginning and 61.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4567.26 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 60.8 MB in the beginning and 38.4 MB in the end (delta: 22.4 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.1 GB. * Witness Printer took 98.18 ms. Allocated memory is still 134.2 MB. Free memory was 38.4 MB in the beginning and 107.0 MB in the end (delta: -68.6 MB). Peak memory consumption was 2.1 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: 18]: 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, 105 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: 4.3s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 157 SDslu, 176 SDs, 0 SdLazy, 299 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=6, InterpolantAutomatonStates: 75, 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, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 439 NumberOfCodeBlocks, 439 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 431 ConstructedInterpolants, 0 QuantifiedInterpolants, 1221 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 09:08:57,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6897ba67-67a0-462b-a9bd-ba5d23e68d2c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...