./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-lit/sssc12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30d722b-9a01-4249-bc34-4bf3203e41c6/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30d722b-9a01-4249-bc34-4bf3203e41c6/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30d722b-9a01-4249-bc34-4bf3203e41c6/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30d722b-9a01-4249-bc34-4bf3203e41c6/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30d722b-9a01-4249-bc34-4bf3203e41c6/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30d722b-9a01-4249-bc34-4bf3203e41c6/bin/uautomizer-TMbwUNV5ro --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 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:15:37,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:15:37,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:15:37,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:15:37,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:15:37,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:15:37,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:15:37,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:15:37,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:15:37,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:15:37,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:15:37,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:15:37,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:15:37,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:15:37,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:15:37,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:15:37,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:15:37,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:15:37,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:15:37,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:15:37,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:15:37,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:15:37,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:15:37,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:15:37,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:15:37,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:15:37,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:15:37,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:15:37,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:15:37,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:15:37,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:15:37,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:15:37,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:15:37,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:15:37,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:15:37,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:15:37,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:15:37,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:15:37,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:15:37,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:15:37,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:15:37,206 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30d722b-9a01-4249-bc34-4bf3203e41c6/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:15:37,242 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:15:37,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:15:37,247 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:15:37,247 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:15:37,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:15:37,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:15:37,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:15:37,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:15:37,251 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:15:37,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:15:37,252 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:15:37,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:15:37,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:15:37,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:15:37,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:15:37,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:15:37,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:15:37,254 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:15:37,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:15:37,254 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:15:37,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:15:37,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:15:37,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:15:37,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:15:37,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:15:37,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:15:37,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:15:37,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:15:37,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:15:37,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:15:37,258 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:15:37,259 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:15:37,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:15:37,259 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_b30d722b-9a01-4249-bc34-4bf3203e41c6/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30d722b-9a01-4249-bc34-4bf3203e41c6/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 [2022-11-18 20:15:37,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:15:37,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:15:37,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:15:37,618 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:15:37,619 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:15:37,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30d722b-9a01-4249-bc34-4bf3203e41c6/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-lit/sssc12.i [2022-11-18 20:15:37,703 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30d722b-9a01-4249-bc34-4bf3203e41c6/bin/uautomizer-TMbwUNV5ro/data/40a040dd1/b7e299ac0f0c490b89e3f9ef54b10818/FLAGd0a8f4cf3 [2022-11-18 20:15:38,381 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:15:38,386 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30d722b-9a01-4249-bc34-4bf3203e41c6/sv-benchmarks/c/pthread-lit/sssc12.i [2022-11-18 20:15:38,404 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30d722b-9a01-4249-bc34-4bf3203e41c6/bin/uautomizer-TMbwUNV5ro/data/40a040dd1/b7e299ac0f0c490b89e3f9ef54b10818/FLAGd0a8f4cf3 [2022-11-18 20:15:38,707 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30d722b-9a01-4249-bc34-4bf3203e41c6/bin/uautomizer-TMbwUNV5ro/data/40a040dd1/b7e299ac0f0c490b89e3f9ef54b10818 [2022-11-18 20:15:38,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:15:38,719 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:15:38,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:15:38,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:15:38,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:15:38,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:15:38" (1/1) ... [2022-11-18 20:15:38,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27badfe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:38, skipping insertion in model container [2022-11-18 20:15:38,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:15:38" (1/1) ... [2022-11-18 20:15:38,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:15:38,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:15:39,383 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30d722b-9a01-4249-bc34-4bf3203e41c6/sv-benchmarks/c/pthread-lit/sssc12.i[46865,46878] [2022-11-18 20:15:39,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:15:39,420 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:15:39,481 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30d722b-9a01-4249-bc34-4bf3203e41c6/sv-benchmarks/c/pthread-lit/sssc12.i[46865,46878] [2022-11-18 20:15:39,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:15:39,551 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:15:39,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:39 WrapperNode [2022-11-18 20:15:39,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:15:39,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:15:39,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:15:39,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:15:39,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:39" (1/1) ... [2022-11-18 20:15:39,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:39" (1/1) ... [2022-11-18 20:15:39,608 INFO L138 Inliner]: procedures = 275, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 82 [2022-11-18 20:15:39,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:15:39,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:15:39,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:15:39,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:15:39,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:39" (1/1) ... [2022-11-18 20:15:39,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:39" (1/1) ... [2022-11-18 20:15:39,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:39" (1/1) ... [2022-11-18 20:15:39,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:39" (1/1) ... [2022-11-18 20:15:39,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:39" (1/1) ... [2022-11-18 20:15:39,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:39" (1/1) ... [2022-11-18 20:15:39,668 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:39" (1/1) ... [2022-11-18 20:15:39,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:39" (1/1) ... [2022-11-18 20:15:39,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:15:39,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:15:39,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:15:39,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:15:39,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:39" (1/1) ... [2022-11-18 20:15:39,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:15:39,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30d722b-9a01-4249-bc34-4bf3203e41c6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:15:39,717 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30d722b-9a01-4249-bc34-4bf3203e41c6/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:15:39,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30d722b-9a01-4249-bc34-4bf3203e41c6/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:15:39,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:15:39,761 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2022-11-18 20:15:39,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2022-11-18 20:15:39,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:15:39,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:15:39,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:15:39,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:15:39,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:15:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:15:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:15:39,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:15:39,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:15:39,765 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:15:39,945 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:15:39,947 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:15:40,162 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:15:40,219 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:15:40,219 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 20:15:40,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:15:40 BoogieIcfgContainer [2022-11-18 20:15:40,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:15:40,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:15:40,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:15:40,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:15:40,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:15:38" (1/3) ... [2022-11-18 20:15:40,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418d02d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:15:40, skipping insertion in model container [2022-11-18 20:15:40,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:39" (2/3) ... [2022-11-18 20:15:40,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418d02d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:15:40, skipping insertion in model container [2022-11-18 20:15:40,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:15:40" (3/3) ... [2022-11-18 20:15:40,233 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12.i [2022-11-18 20:15:40,240 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:15:40,251 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:15:40,251 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:15:40,251 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:15:40,327 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:15:40,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 82 transitions, 169 flow [2022-11-18 20:15:40,442 INFO L130 PetriNetUnfolder]: 7/94 cut-off events. [2022-11-18 20:15:40,443 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:15:40,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 94 events. 7/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 78 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 47. Up to 4 conditions per place. [2022-11-18 20:15:40,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 82 transitions, 169 flow [2022-11-18 20:15:40,462 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 82 transitions, 169 flow [2022-11-18 20:15:40,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:15:40,491 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@135a9d72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:15:40,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-18 20:15:40,535 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2022-11-18 20:15:40,536 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:15:40,536 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:40,537 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:40,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:40,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:40,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1744097695, now seen corresponding path program 1 times [2022-11-18 20:15:40,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:40,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509161529] [2022-11-18 20:15:40,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:40,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:15:40,778 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:15:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:15:40,852 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:15:40,854 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:15:40,856 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-11-18 20:15:40,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-11-18 20:15:40,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-11-18 20:15:40,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:15:40,861 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-18 20:15:40,864 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:15:40,865 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 20:15:40,932 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:15:40,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 116 transitions, 244 flow [2022-11-18 20:15:40,973 INFO L130 PetriNetUnfolder]: 12/142 cut-off events. [2022-11-18 20:15:40,973 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:15:40,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 142 events. 12/142 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 250 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 95. Up to 6 conditions per place. [2022-11-18 20:15:40,975 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 116 transitions, 244 flow [2022-11-18 20:15:40,977 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 116 transitions, 244 flow [2022-11-18 20:15:40,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:15:40,980 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@135a9d72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:15:40,980 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-18 20:15:40,999 INFO L130 PetriNetUnfolder]: 6/99 cut-off events. [2022-11-18 20:15:41,000 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:15:41,000 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:41,000 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:41,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:15:41,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:41,001 INFO L85 PathProgramCache]: Analyzing trace with hash -454638259, now seen corresponding path program 1 times [2022-11-18 20:15:41,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:41,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033261658] [2022-11-18 20:15:41,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:41,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:15:41,039 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:15:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:15:41,072 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:15:41,072 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:15:41,073 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-11-18 20:15:41,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-11-18 20:15:41,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-11-18 20:15:41,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-11-18 20:15:41,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:15:41,074 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-18 20:15:41,075 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:15:41,075 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 20:15:41,109 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:15:41,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 150 transitions, 321 flow [2022-11-18 20:15:41,168 INFO L130 PetriNetUnfolder]: 17/190 cut-off events. [2022-11-18 20:15:41,169 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-18 20:15:41,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 190 events. 17/190 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 436 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 146. Up to 8 conditions per place. [2022-11-18 20:15:41,172 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 150 transitions, 321 flow [2022-11-18 20:15:41,174 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 150 transitions, 321 flow [2022-11-18 20:15:41,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:15:41,177 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@135a9d72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:15:41,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-18 20:15:41,201 INFO L130 PetriNetUnfolder]: 8/129 cut-off events. [2022-11-18 20:15:41,201 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:15:41,201 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:41,202 INFO L209 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] [2022-11-18 20:15:41,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-18 20:15:41,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:41,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1294541417, now seen corresponding path program 1 times [2022-11-18 20:15:41,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:41,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049538648] [2022-11-18 20:15:41,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:41,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:41,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:41,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:41,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049538648] [2022-11-18 20:15:41,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049538648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:41,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:41,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:15:41,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302892630] [2022-11-18 20:15:41,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:41,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:15:41,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:41,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:15:41,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:15:41,566 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 150 [2022-11-18 20:15:41,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 150 transitions, 321 flow. Second operand has 4 states, 4 states have (on average 119.25) internal successors, (477), 4 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:41,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:41,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 150 [2022-11-18 20:15:41,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:41,996 INFO L130 PetriNetUnfolder]: 372/1535 cut-off events. [2022-11-18 20:15:41,997 INFO L131 PetriNetUnfolder]: For 340/340 co-relation queries the response was YES. [2022-11-18 20:15:42,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2301 conditions, 1535 events. 372/1535 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11848 event pairs, 193 based on Foata normal form. 447/1822 useless extension candidates. Maximal degree in co-relation 1582. Up to 362 conditions per place. [2022-11-18 20:15:42,024 INFO L137 encePairwiseOnDemand]: 137/150 looper letters, 32 selfloop transitions, 3 changer transitions 1/146 dead transitions. [2022-11-18 20:15:42,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 146 transitions, 407 flow [2022-11-18 20:15:42,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:15:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:15:42,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 526 transitions. [2022-11-18 20:15:42,046 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8766666666666667 [2022-11-18 20:15:42,047 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 526 transitions. [2022-11-18 20:15:42,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 526 transitions. [2022-11-18 20:15:42,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:42,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 526 transitions. [2022-11-18 20:15:42,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 131.5) internal successors, (526), 4 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:42,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:42,072 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:42,074 INFO L175 Difference]: Start difference. First operand has 143 places, 150 transitions, 321 flow. Second operand 4 states and 526 transitions. [2022-11-18 20:15:42,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 146 transitions, 407 flow [2022-11-18 20:15:42,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 146 transitions, 397 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-11-18 20:15:42,084 INFO L231 Difference]: Finished difference. Result has 137 places, 131 transitions, 287 flow [2022-11-18 20:15:42,086 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=287, PETRI_PLACES=137, PETRI_TRANSITIONS=131} [2022-11-18 20:15:42,094 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, -6 predicate places. [2022-11-18 20:15:42,094 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 131 transitions, 287 flow [2022-11-18 20:15:42,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.25) internal successors, (477), 4 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:42,097 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:42,098 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:42,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:15:42,099 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-18 20:15:42,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:42,100 INFO L85 PathProgramCache]: Analyzing trace with hash -2146453910, now seen corresponding path program 1 times [2022-11-18 20:15:42,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:42,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622016171] [2022-11-18 20:15:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:42,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:15:42,163 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:15:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:15:42,194 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:15:42,195 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:15:42,195 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-18 20:15:42,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-18 20:15:42,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-11-18 20:15:42,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-11-18 20:15:42,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-11-18 20:15:42,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:15:42,197 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-18 20:15:42,197 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:15:42,197 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-18 20:15:42,245 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:15:42,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 184 transitions, 400 flow [2022-11-18 20:15:42,306 INFO L130 PetriNetUnfolder]: 22/238 cut-off events. [2022-11-18 20:15:42,306 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-18 20:15:42,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 238 events. 22/238 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 629 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 198. Up to 10 conditions per place. [2022-11-18 20:15:42,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 184 transitions, 400 flow [2022-11-18 20:15:42,311 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 184 transitions, 400 flow [2022-11-18 20:15:42,312 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:15:42,313 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@135a9d72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:15:42,313 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-18 20:15:42,328 INFO L130 PetriNetUnfolder]: 9/131 cut-off events. [2022-11-18 20:15:42,328 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:15:42,328 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:42,328 INFO L209 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] [2022-11-18 20:15:42,329 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-18 20:15:42,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:42,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1203440754, now seen corresponding path program 1 times [2022-11-18 20:15:42,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:42,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728378158] [2022-11-18 20:15:42,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:42,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:42,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:42,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:42,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728378158] [2022-11-18 20:15:42,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728378158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:42,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:42,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:15:42,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073111149] [2022-11-18 20:15:42,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:42,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:15:42,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:42,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:15:42,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:15:42,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 184 [2022-11-18 20:15:42,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 184 transitions, 400 flow. Second operand has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:42,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:42,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 184 [2022-11-18 20:15:42,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:44,073 INFO L130 PetriNetUnfolder]: 1890/7960 cut-off events. [2022-11-18 20:15:44,074 INFO L131 PetriNetUnfolder]: For 1861/1861 co-relation queries the response was YES. [2022-11-18 20:15:44,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11030 conditions, 7960 events. 1890/7960 cut-off events. For 1861/1861 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 87921 event pairs, 1192 based on Foata normal form. 1746/8795 useless extension candidates. Maximal degree in co-relation 3675. Up to 1452 conditions per place. [2022-11-18 20:15:44,205 INFO L137 encePairwiseOnDemand]: 169/184 looper letters, 41 selfloop transitions, 3 changer transitions 1/183 dead transitions. [2022-11-18 20:15:44,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 183 transitions, 528 flow [2022-11-18 20:15:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:15:44,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:15:44,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 653 transitions. [2022-11-18 20:15:44,209 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8872282608695652 [2022-11-18 20:15:44,209 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 653 transitions. [2022-11-18 20:15:44,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 653 transitions. [2022-11-18 20:15:44,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:44,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 653 transitions. [2022-11-18 20:15:44,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:44,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:44,214 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:44,215 INFO L175 Difference]: Start difference. First operand has 175 places, 184 transitions, 400 flow. Second operand 4 states and 653 transitions. [2022-11-18 20:15:44,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 183 transitions, 528 flow [2022-11-18 20:15:44,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 183 transitions, 504 flow, removed 12 selfloop flow, removed 0 redundant places. [2022-11-18 20:15:44,233 INFO L231 Difference]: Finished difference. Result has 168 places, 162 transitions, 354 flow [2022-11-18 20:15:44,233 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=354, PETRI_PLACES=168, PETRI_TRANSITIONS=162} [2022-11-18 20:15:44,234 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, -7 predicate places. [2022-11-18 20:15:44,235 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 162 transitions, 354 flow [2022-11-18 20:15:44,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:44,235 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:44,236 INFO L209 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] [2022-11-18 20:15:44,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:15:44,236 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-18 20:15:44,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:44,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1870766685, now seen corresponding path program 1 times [2022-11-18 20:15:44,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:44,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954607251] [2022-11-18 20:15:44,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:44,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:44,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:44,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:44,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954607251] [2022-11-18 20:15:44,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954607251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:44,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:44,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:15:44,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873063321] [2022-11-18 20:15:44,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:44,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:15:44,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:44,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:15:44,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:15:44,651 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 184 [2022-11-18 20:15:44,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 162 transitions, 354 flow. Second operand has 8 states, 8 states have (on average 119.5) internal successors, (956), 8 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:44,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:44,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 184 [2022-11-18 20:15:44,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:04,992 INFO L130 PetriNetUnfolder]: 85323/157903 cut-off events. [2022-11-18 20:16:04,992 INFO L131 PetriNetUnfolder]: For 13381/13381 co-relation queries the response was YES. [2022-11-18 20:16:05,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287877 conditions, 157903 events. 85323/157903 cut-off events. For 13381/13381 co-relation queries the response was YES. Maximal size of possible extension queue 6057. Compared 1864179 event pairs, 7373 based on Foata normal form. 0/143627 useless extension candidates. Maximal degree in co-relation 287572. Up to 33497 conditions per place. [2022-11-18 20:16:07,253 INFO L137 encePairwiseOnDemand]: 163/184 looper letters, 273 selfloop transitions, 21 changer transitions 0/404 dead transitions. [2022-11-18 20:16:07,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 404 transitions, 1565 flow [2022-11-18 20:16:07,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:16:07,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:16:07,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1473 transitions. [2022-11-18 20:16:07,259 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8005434782608696 [2022-11-18 20:16:07,259 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1473 transitions. [2022-11-18 20:16:07,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1473 transitions. [2022-11-18 20:16:07,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:07,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1473 transitions. [2022-11-18 20:16:07,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 147.3) internal successors, (1473), 10 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:07,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 184.0) internal successors, (2024), 11 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:07,271 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 184.0) internal successors, (2024), 11 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:07,271 INFO L175 Difference]: Start difference. First operand has 168 places, 162 transitions, 354 flow. Second operand 10 states and 1473 transitions. [2022-11-18 20:16:07,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 404 transitions, 1565 flow [2022-11-18 20:16:07,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 404 transitions, 1549 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:16:07,406 INFO L231 Difference]: Finished difference. Result has 182 places, 182 transitions, 532 flow [2022-11-18 20:16:07,406 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=532, PETRI_PLACES=182, PETRI_TRANSITIONS=182} [2022-11-18 20:16:07,407 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 7 predicate places. [2022-11-18 20:16:07,407 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 182 transitions, 532 flow [2022-11-18 20:16:07,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 119.5) internal successors, (956), 8 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:07,408 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:07,409 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:07,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:16:07,409 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-18 20:16:07,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:07,410 INFO L85 PathProgramCache]: Analyzing trace with hash -44647781, now seen corresponding path program 1 times [2022-11-18 20:16:07,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:07,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89055083] [2022-11-18 20:16:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:07,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:07,521 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:16:07,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:07,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89055083] [2022-11-18 20:16:07,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89055083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:07,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:07,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:16:07,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497430924] [2022-11-18 20:16:07,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:07,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:16:07,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:07,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:16:07,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:16:07,527 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 184 [2022-11-18 20:16:07,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 182 transitions, 532 flow. Second operand has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:07,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:07,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 184 [2022-11-18 20:16:07,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:11,338 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([735] L1028-1-->L1026-2: Formula: (= v_~next~0_6 |v_thrThread2of4ForFork0_~end~0#1_7|) InVars {thrThread2of4ForFork0_~end~0#1=|v_thrThread2of4ForFork0_~end~0#1_7|} OutVars{~next~0=v_~next~0_6, thrThread2of4ForFork0_~end~0#1=|v_thrThread2of4ForFork0_~end~0#1_7|} AuxVars[] AssignedVars[~next~0][143], [189#(and (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), Black: 193#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0)) (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), Black: 195#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)) (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0)) (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), thrThread1of4ForFork0InUse, Black: 186#(= ~next~0 0), Black: 191#(not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)), Black: 187#(and (<= (+ ~next~0 10) ~len~0) (= ~next~0 0)), thrThread2of4ForFork0InUse, Black: 184#true, Black: 188#(and (<= (+ ~next~0 10) ~len~0) (= ~next~0 0) (= |thrThread1of4ForFork0_~c~0#1| 0)), thrThread3of4ForFork0InUse, Black: 197#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)) (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0))), thrThread4of4ForFork0InUse, 208#true, 25#L1013true, Black: 181#(and (= |thrThread1of4ForFork0_~end~0#1| 0) (= |thrThread1of4ForFork0_~c~0#1| 0)), 39#L1046-4true, 128#L1026-2true, 64#L1026-2true, 93#L1028true]) [2022-11-18 20:16:11,339 INFO L383 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-11-18 20:16:11,339 INFO L386 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-11-18 20:16:11,339 INFO L386 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-11-18 20:16:11,339 INFO L386 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-11-18 20:16:11,551 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([800] L1016-->L1019: Formula: (and (= v_~lock~0_29 0) (= |v_thrThread4of4ForFork0_assume_abort_if_not_#in~cond#1_3| |v_thrThread4of4ForFork0_assume_abort_if_not_~cond#1_3|) (= |v_thrThread4of4ForFork0_assume_abort_if_not_#in~cond#1_3| (ite (= v_~lock~0_30 1) 1 0)) (not (= 0 |v_thrThread4of4ForFork0_assume_abort_if_not_~cond#1_3|))) InVars {~lock~0=v_~lock~0_30} OutVars{thrThread4of4ForFork0_assume_abort_if_not_#in~cond#1=|v_thrThread4of4ForFork0_assume_abort_if_not_#in~cond#1_3|, ~lock~0=v_~lock~0_29, thrThread4of4ForFork0_assume_abort_if_not_~cond#1=|v_thrThread4of4ForFork0_assume_abort_if_not_~cond#1_3|} AuxVars[] AssignedVars[thrThread4of4ForFork0_assume_abort_if_not_#in~cond#1, ~lock~0, thrThread4of4ForFork0_assume_abort_if_not_~cond#1][167], [30#L1019true, 189#(and (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), Black: 193#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0)) (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), 3#L1028-1true, Black: 195#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)) (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0)) (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), thrThread1of4ForFork0InUse, Black: 186#(= ~next~0 0), Black: 191#(not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)), Black: 187#(and (<= (+ ~next~0 10) ~len~0) (= ~next~0 0)), thrThread2of4ForFork0InUse, Black: 184#true, Black: 188#(and (<= (+ ~next~0 10) ~len~0) (= ~next~0 0) (= |thrThread1of4ForFork0_~c~0#1| 0)), thrThread3of4ForFork0InUse, Black: 197#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)) (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0))), thrThread4of4ForFork0InUse, 208#true, 25#L1013true, Black: 181#(and (= |thrThread1of4ForFork0_~end~0#1| 0) (= |thrThread1of4ForFork0_~c~0#1| 0)), 39#L1046-4true, 93#L1028true]) [2022-11-18 20:16:11,551 INFO L383 tUnfolder$Statistics]: this new event has 99 ancestors and is cut-off event [2022-11-18 20:16:11,551 INFO L386 tUnfolder$Statistics]: existing Event has 99 ancestors and is cut-off event [2022-11-18 20:16:11,551 INFO L386 tUnfolder$Statistics]: existing Event has 99 ancestors and is cut-off event [2022-11-18 20:16:11,551 INFO L386 tUnfolder$Statistics]: existing Event has 99 ancestors and is cut-off event [2022-11-18 20:16:11,745 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([735] L1028-1-->L1026-2: Formula: (= v_~next~0_6 |v_thrThread2of4ForFork0_~end~0#1_7|) InVars {thrThread2of4ForFork0_~end~0#1=|v_thrThread2of4ForFork0_~end~0#1_7|} OutVars{~next~0=v_~next~0_6, thrThread2of4ForFork0_~end~0#1=|v_thrThread2of4ForFork0_~end~0#1_7|} AuxVars[] AssignedVars[~next~0][143], [189#(and (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), Black: 193#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0)) (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), Black: 195#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)) (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0)) (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), 100#L1026-2true, thrThread1of4ForFork0InUse, Black: 186#(= ~next~0 0), Black: 191#(not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)), thrThread2of4ForFork0InUse, Black: 187#(and (<= (+ ~next~0 10) ~len~0) (= ~next~0 0)), Black: 184#true, thrThread3of4ForFork0InUse, Black: 188#(and (<= (+ ~next~0 10) ~len~0) (= ~next~0 0) (= |thrThread1of4ForFork0_~c~0#1| 0)), Black: 197#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)) (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0))), thrThread4of4ForFork0InUse, 208#true, 25#L1013true, Black: 181#(and (= |thrThread1of4ForFork0_~end~0#1| 0) (= |thrThread1of4ForFork0_~c~0#1| 0)), 39#L1046-4true, 128#L1026-2true, 64#L1026-2true]) [2022-11-18 20:16:11,745 INFO L383 tUnfolder$Statistics]: this new event has 100 ancestors and is cut-off event [2022-11-18 20:16:11,745 INFO L386 tUnfolder$Statistics]: existing Event has 97 ancestors and is cut-off event [2022-11-18 20:16:11,746 INFO L386 tUnfolder$Statistics]: existing Event has 97 ancestors and is cut-off event [2022-11-18 20:16:11,746 INFO L386 tUnfolder$Statistics]: existing Event has 97 ancestors and is cut-off event [2022-11-18 20:16:14,652 INFO L130 PetriNetUnfolder]: 12614/46435 cut-off events. [2022-11-18 20:16:14,653 INFO L131 PetriNetUnfolder]: For 7857/10325 co-relation queries the response was YES. [2022-11-18 20:16:15,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74751 conditions, 46435 events. 12614/46435 cut-off events. For 7857/10325 co-relation queries the response was YES. Maximal size of possible extension queue 2005. Compared 680309 event pairs, 6048 based on Foata normal form. 77/40847 useless extension candidates. Maximal degree in co-relation 74586. Up to 8662 conditions per place. [2022-11-18 20:16:15,336 INFO L137 encePairwiseOnDemand]: 180/184 looper letters, 41 selfloop transitions, 3 changer transitions 0/200 dead transitions. [2022-11-18 20:16:15,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 200 transitions, 676 flow [2022-11-18 20:16:15,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:16:15,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:16:15,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2022-11-18 20:16:15,338 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8464673913043478 [2022-11-18 20:16:15,338 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2022-11-18 20:16:15,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2022-11-18 20:16:15,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:15,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2022-11-18 20:16:15,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:15,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:15,343 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:15,343 INFO L175 Difference]: Start difference. First operand has 182 places, 182 transitions, 532 flow. Second operand 4 states and 623 transitions. [2022-11-18 20:16:15,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 200 transitions, 676 flow [2022-11-18 20:16:15,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 200 transitions, 676 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:16:15,490 INFO L231 Difference]: Finished difference. Result has 186 places, 182 transitions, 542 flow [2022-11-18 20:16:15,491 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=542, PETRI_PLACES=186, PETRI_TRANSITIONS=182} [2022-11-18 20:16:15,492 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 11 predicate places. [2022-11-18 20:16:15,492 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 182 transitions, 542 flow [2022-11-18 20:16:15,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:15,493 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:15,493 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:15,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:16:15,493 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-18 20:16:15,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:15,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1790486798, now seen corresponding path program 1 times [2022-11-18 20:16:15,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:15,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151793952] [2022-11-18 20:16:15,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:15,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:16:15,516 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:16:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:16:15,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:16:15,537 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:16:15,537 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-11-18 20:16:15,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-18 20:16:15,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-11-18 20:16:15,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-11-18 20:16:15,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-11-18 20:16:15,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-18 20:16:15,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:16:15,539 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-18 20:16:15,540 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:16:15,540 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-18 20:16:15,575 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:16:15,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 218 transitions, 481 flow [2022-11-18 20:16:15,619 INFO L130 PetriNetUnfolder]: 27/286 cut-off events. [2022-11-18 20:16:15,619 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-18 20:16:15,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 286 events. 27/286 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 823 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 251. Up to 12 conditions per place. [2022-11-18 20:16:15,623 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 218 transitions, 481 flow [2022-11-18 20:16:15,625 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 218 transitions, 481 flow [2022-11-18 20:16:15,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:16:15,627 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@135a9d72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:16:15,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-18 20:16:15,639 INFO L130 PetriNetUnfolder]: 9/135 cut-off events. [2022-11-18 20:16:15,639 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:16:15,639 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:15,639 INFO L209 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] [2022-11-18 20:16:15,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:16:15,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:15,640 INFO L85 PathProgramCache]: Analyzing trace with hash -557048599, now seen corresponding path program 1 times [2022-11-18 20:16:15,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:15,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261832196] [2022-11-18 20:16:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:15,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:15,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:15,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261832196] [2022-11-18 20:16:15,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261832196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:15,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:15,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:16:15,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077800199] [2022-11-18 20:16:15,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:15,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:16:15,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:15,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:16:15,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:16:15,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 218 [2022-11-18 20:16:15,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 218 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:15,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:15,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 218 [2022-11-18 20:16:15,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:19,832 INFO L130 PetriNetUnfolder]: 7116/26519 cut-off events. [2022-11-18 20:16:19,832 INFO L131 PetriNetUnfolder]: For 9032/9032 co-relation queries the response was YES. [2022-11-18 20:16:20,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38038 conditions, 26519 events. 7116/26519 cut-off events. For 9032/9032 co-relation queries the response was YES. Maximal size of possible extension queue 865. Compared 345109 event pairs, 3601 based on Foata normal form. 6598/30331 useless extension candidates. Maximal degree in co-relation 13544. Up to 5384 conditions per place. [2022-11-18 20:16:20,221 INFO L137 encePairwiseOnDemand]: 201/218 looper letters, 50 selfloop transitions, 3 changer transitions 1/220 dead transitions. [2022-11-18 20:16:20,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 220 transitions, 655 flow [2022-11-18 20:16:20,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:16:20,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:16:20,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 780 transitions. [2022-11-18 20:16:20,225 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8944954128440367 [2022-11-18 20:16:20,225 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 780 transitions. [2022-11-18 20:16:20,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 780 transitions. [2022-11-18 20:16:20,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:20,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 780 transitions. [2022-11-18 20:16:20,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:20,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:20,231 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:20,231 INFO L175 Difference]: Start difference. First operand has 207 places, 218 transitions, 481 flow. Second operand 4 states and 780 transitions. [2022-11-18 20:16:20,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 220 transitions, 655 flow [2022-11-18 20:16:20,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 220 transitions, 611 flow, removed 22 selfloop flow, removed 0 redundant places. [2022-11-18 20:16:20,239 INFO L231 Difference]: Finished difference. Result has 199 places, 193 transitions, 421 flow [2022-11-18 20:16:20,240 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=421, PETRI_PLACES=199, PETRI_TRANSITIONS=193} [2022-11-18 20:16:20,240 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, -8 predicate places. [2022-11-18 20:16:20,241 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 193 transitions, 421 flow [2022-11-18 20:16:20,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:20,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:20,242 INFO L209 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] [2022-11-18 20:16:20,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:16:20,242 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:16:20,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:20,243 INFO L85 PathProgramCache]: Analyzing trace with hash 459816964, now seen corresponding path program 1 times [2022-11-18 20:16:20,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:20,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56773087] [2022-11-18 20:16:20,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:20,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:20,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:20,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:20,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56773087] [2022-11-18 20:16:20,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56773087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:20,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:20,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:16:20,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90001717] [2022-11-18 20:16:20,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:20,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:16:20,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:20,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:16:20,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:16:20,456 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 218 [2022-11-18 20:16:20,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 193 transitions, 421 flow. Second operand has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:20,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:20,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 218 [2022-11-18 20:16:20,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand