./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 b8efebf87dc67f98045ac231dc43d6a61f436e058244f16134f1d46d3b696c80 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:42:36,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:42:36,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:42:36,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:42:36,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:42:36,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:42:36,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:42:36,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:42:36,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:42:36,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:42:36,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:42:36,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:42:36,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:42:36,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:42:36,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:42:36,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:42:36,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:42:36,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:42:36,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:42:36,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:42:36,191 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:42:36,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:42:36,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:42:36,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:42:36,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:42:36,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:42:36,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:42:36,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:42:36,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:42:36,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:42:36,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:42:36,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:42:36,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:42:36,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:42:36,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:42:36,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:42:36,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:42:36,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:42:36,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:42:36,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:42:36,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:42:36,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:42:36,217 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:42:36,237 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:42:36,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:42:36,238 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:42:36,238 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:42:36,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:42:36,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:42:36,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:42:36,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:42:36,239 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:42:36,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:42:36,240 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:42:36,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:42:36,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:42:36,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:42:36,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:42:36,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:42:36,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:42:36,241 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:42:36,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:42:36,242 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:42:36,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:42:36,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:42:36,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:42:36,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:42:36,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:42:36,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:42:36,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:42:36,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:42:36,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:42:36,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:42:36,243 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:42:36,243 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:42:36,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:42:36,244 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8efebf87dc67f98045ac231dc43d6a61f436e058244f16134f1d46d3b696c80 [2022-07-21 08:42:36,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:42:36,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:42:36,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:42:36,540 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:42:36,541 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:42:36,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i [2022-07-21 08:42:36,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0b515a17/4e0b8ef84a664c9fa3569660d0d8759d/FLAG359bb08c3 [2022-07-21 08:42:37,106 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:42:37,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i [2022-07-21 08:42:37,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0b515a17/4e0b8ef84a664c9fa3569660d0d8759d/FLAG359bb08c3 [2022-07-21 08:42:37,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0b515a17/4e0b8ef84a664c9fa3569660d0d8759d [2022-07-21 08:42:37,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:42:37,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:42:37,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:42:37,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:42:37,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:42:37,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:42:37" (1/1) ... [2022-07-21 08:42:37,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b941f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:37, skipping insertion in model container [2022-07-21 08:42:37,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:42:37" (1/1) ... [2022-07-21 08:42:37,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:42:37,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:42:37,749 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-21 08:42:37,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:42:37,851 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:42:37,859 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-21 08:42:37,902 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:42:37,944 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:42:37,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:37 WrapperNode [2022-07-21 08:42:37,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:42:37,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:42:37,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:42:37,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:42:37,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:37" (1/1) ... [2022-07-21 08:42:37,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:37" (1/1) ... [2022-07-21 08:42:38,022 INFO L137 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 191 [2022-07-21 08:42:38,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:42:38,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:42:38,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:42:38,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:42:38,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:37" (1/1) ... [2022-07-21 08:42:38,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:37" (1/1) ... [2022-07-21 08:42:38,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:37" (1/1) ... [2022-07-21 08:42:38,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:37" (1/1) ... [2022-07-21 08:42:38,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:37" (1/1) ... [2022-07-21 08:42:38,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:37" (1/1) ... [2022-07-21 08:42:38,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:37" (1/1) ... [2022-07-21 08:42:38,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:42:38,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:42:38,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:42:38,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:42:38,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:37" (1/1) ... [2022-07-21 08:42:38,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:42:38,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:42:38,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:42:38,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:42:38,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:42:38,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-21 08:42:38,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:42:38,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:42:38,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:42:38,144 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-21 08:42:38,144 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-21 08:42:38,144 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-21 08:42:38,144 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-21 08:42:38,145 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-21 08:42:38,145 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-21 08:42:38,145 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-21 08:42:38,145 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-21 08:42:38,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:42:38,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-21 08:42:38,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:42:38,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:42:38,147 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:42:38,238 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:42:38,240 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:42:38,730 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:42:38,993 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:42:38,993 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:42:38,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:42:38 BoogieIcfgContainer [2022-07-21 08:42:38,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:42:38,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:42:38,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:42:39,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:42:39,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:42:37" (1/3) ... [2022-07-21 08:42:39,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746b9e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:42:39, skipping insertion in model container [2022-07-21 08:42:39,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:37" (2/3) ... [2022-07-21 08:42:39,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746b9e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:42:39, skipping insertion in model container [2022-07-21 08:42:39,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:42:38" (3/3) ... [2022-07-21 08:42:39,003 INFO L111 eAbstractionObserver]: Analyzing ICFG mix055_power.oepc_pso.oepc_rmo.oepc.i [2022-07-21 08:42:39,008 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:42:39,014 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:42:39,014 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:42:39,014 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:42:39,083 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:42:39,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 146 places, 135 transitions, 290 flow [2022-07-21 08:42:39,158 INFO L129 PetriNetUnfolder]: 2/131 cut-off events. [2022-07-21 08:42:39,158 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:42:39,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 2/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-07-21 08:42:39,162 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 135 transitions, 290 flow [2022-07-21 08:42:39,169 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 131 transitions, 274 flow [2022-07-21 08:42:39,180 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:42:39,186 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1b717007, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@56ac995b [2022-07-21 08:42:39,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-21 08:42:39,198 INFO L129 PetriNetUnfolder]: 0/49 cut-off events. [2022-07-21 08:42:39,199 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:42:39,200 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:42:39,200 INFO L200 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] [2022-07-21 08:42:39,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:42:39,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:42:39,206 INFO L85 PathProgramCache]: Analyzing trace with hash 927645456, now seen corresponding path program 1 times [2022-07-21 08:42:39,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:42:39,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824687440] [2022-07-21 08:42:39,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:42:39,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:42:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:42:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:42:39,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:42:39,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824687440] [2022-07-21 08:42:39,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824687440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:42:39,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:42:39,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:42:39,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673269871] [2022-07-21 08:42:39,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:42:39,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:42:39,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:42:39,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:42:39,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:42:39,484 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 135 [2022-07-21 08:42:39,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 131 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:39,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:42:39,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 135 [2022-07-21 08:42:39,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:42:39,730 INFO L129 PetriNetUnfolder]: 162/667 cut-off events. [2022-07-21 08:42:39,730 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-21 08:42:39,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 973 conditions, 667 events. 162/667 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3741 event pairs, 102 based on Foata normal form. 27/644 useless extension candidates. Maximal degree in co-relation 917. Up to 191 conditions per place. [2022-07-21 08:42:39,741 INFO L132 encePairwiseOnDemand]: 130/135 looper letters, 18 selfloop transitions, 2 changer transitions 0/135 dead transitions. [2022-07-21 08:42:39,741 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 135 transitions, 331 flow [2022-07-21 08:42:39,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:42:39,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:42:39,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2022-07-21 08:42:39,756 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9432098765432099 [2022-07-21 08:42:39,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2022-07-21 08:42:39,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2022-07-21 08:42:39,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:42:39,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2022-07-21 08:42:39,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:39,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:39,773 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:39,782 INFO L186 Difference]: Start difference. First operand has 142 places, 131 transitions, 274 flow. Second operand 3 states and 382 transitions. [2022-07-21 08:42:39,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 135 transitions, 331 flow [2022-07-21 08:42:39,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 135 transitions, 324 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 08:42:39,788 INFO L242 Difference]: Finished difference. Result has 138 places, 127 transitions, 266 flow [2022-07-21 08:42:39,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=138, PETRI_TRANSITIONS=127} [2022-07-21 08:42:39,793 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, -4 predicate places. [2022-07-21 08:42:39,793 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 127 transitions, 266 flow [2022-07-21 08:42:39,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:39,794 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:42:39,794 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:42:39,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:42:39,795 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:42:39,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:42:39,796 INFO L85 PathProgramCache]: Analyzing trace with hash -110110, now seen corresponding path program 1 times [2022-07-21 08:42:39,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:42:39,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183407587] [2022-07-21 08:42:39,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:42:39,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:42:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:42:40,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:42:40,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:42:40,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183407587] [2022-07-21 08:42:40,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183407587] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:42:40,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:42:40,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:42:40,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659554] [2022-07-21 08:42:40,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:42:40,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:42:40,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:42:40,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:42:40,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:42:40,049 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 135 [2022-07-21 08:42:40,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 127 transitions, 266 flow. Second operand has 7 states, 7 states have (on average 106.14285714285714) internal successors, (743), 7 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:40,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:42:40,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 135 [2022-07-21 08:42:40,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:42:42,896 INFO L129 PetriNetUnfolder]: 11035/24755 cut-off events. [2022-07-21 08:42:42,897 INFO L130 PetriNetUnfolder]: For 887/887 co-relation queries the response was YES. [2022-07-21 08:42:42,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41074 conditions, 24755 events. 11035/24755 cut-off events. For 887/887 co-relation queries the response was YES. Maximal size of possible extension queue 1075. Compared 252799 event pairs, 1675 based on Foata normal form. 0/24064 useless extension candidates. Maximal degree in co-relation 41016. Up to 5250 conditions per place. [2022-07-21 08:42:43,006 INFO L132 encePairwiseOnDemand]: 124/135 looper letters, 47 selfloop transitions, 9 changer transitions 119/262 dead transitions. [2022-07-21 08:42:43,006 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 262 transitions, 892 flow [2022-07-21 08:42:43,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:42:43,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:42:43,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1517 transitions. [2022-07-21 08:42:43,009 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8643874643874644 [2022-07-21 08:42:43,009 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1517 transitions. [2022-07-21 08:42:43,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1517 transitions. [2022-07-21 08:42:43,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:42:43,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1517 transitions. [2022-07-21 08:42:43,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.6923076923077) internal successors, (1517), 13 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:43,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:43,016 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:43,017 INFO L186 Difference]: Start difference. First operand has 138 places, 127 transitions, 266 flow. Second operand 13 states and 1517 transitions. [2022-07-21 08:42:43,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 262 transitions, 892 flow [2022-07-21 08:42:43,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 262 transitions, 866 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:42:43,021 INFO L242 Difference]: Finished difference. Result has 160 places, 121 transitions, 344 flow [2022-07-21 08:42:43,022 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=344, PETRI_PLACES=160, PETRI_TRANSITIONS=121} [2022-07-21 08:42:43,022 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 18 predicate places. [2022-07-21 08:42:43,023 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 121 transitions, 344 flow [2022-07-21 08:42:43,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.14285714285714) internal successors, (743), 7 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:43,023 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:42:43,023 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:42:43,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:42:43,024 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:42:43,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:42:43,024 INFO L85 PathProgramCache]: Analyzing trace with hash -90960159, now seen corresponding path program 1 times [2022-07-21 08:42:43,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:42:43,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149377719] [2022-07-21 08:42:43,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:42:43,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:42:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:42:43,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:42:43,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:42:43,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149377719] [2022-07-21 08:42:43,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149377719] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:42:43,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:42:43,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:42:43,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558806085] [2022-07-21 08:42:43,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:42:43,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:42:43,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:42:43,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:42:43,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:42:43,125 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 135 [2022-07-21 08:42:43,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 121 transitions, 344 flow. Second operand has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:43,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:42:43,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 135 [2022-07-21 08:42:43,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:42:44,876 INFO L129 PetriNetUnfolder]: 7875/14020 cut-off events. [2022-07-21 08:42:44,876 INFO L130 PetriNetUnfolder]: For 23202/23205 co-relation queries the response was YES. [2022-07-21 08:42:44,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40388 conditions, 14020 events. 7875/14020 cut-off events. For 23202/23205 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 110919 event pairs, 742 based on Foata normal form. 256/13984 useless extension candidates. Maximal degree in co-relation 40318. Up to 4293 conditions per place. [2022-07-21 08:42:44,970 INFO L132 encePairwiseOnDemand]: 123/135 looper letters, 48 selfloop transitions, 17 changer transitions 100/252 dead transitions. [2022-07-21 08:42:44,971 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 252 transitions, 1364 flow [2022-07-21 08:42:44,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:42:44,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:42:44,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1499 transitions. [2022-07-21 08:42:44,974 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8541310541310542 [2022-07-21 08:42:44,974 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1499 transitions. [2022-07-21 08:42:44,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1499 transitions. [2022-07-21 08:42:44,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:42:44,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1499 transitions. [2022-07-21 08:42:44,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.3076923076923) internal successors, (1499), 13 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:45,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:45,057 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:45,058 INFO L186 Difference]: Start difference. First operand has 160 places, 121 transitions, 344 flow. Second operand 13 states and 1499 transitions. [2022-07-21 08:42:45,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 252 transitions, 1364 flow [2022-07-21 08:42:45,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 252 transitions, 1340 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-07-21 08:42:45,136 INFO L242 Difference]: Finished difference. Result has 158 places, 133 transitions, 546 flow [2022-07-21 08:42:45,136 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=546, PETRI_PLACES=158, PETRI_TRANSITIONS=133} [2022-07-21 08:42:45,137 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 16 predicate places. [2022-07-21 08:42:45,137 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 133 transitions, 546 flow [2022-07-21 08:42:45,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:45,137 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:42:45,137 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:42:45,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:42:45,138 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:42:45,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:42:45,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1605361214, now seen corresponding path program 1 times [2022-07-21 08:42:45,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:42:45,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530978197] [2022-07-21 08:42:45,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:42:45,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:42:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:42:45,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:42:45,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:42:45,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530978197] [2022-07-21 08:42:45,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530978197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:42:45,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:42:45,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:42:45,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149558459] [2022-07-21 08:42:45,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:42:45,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:42:45,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:42:45,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:42:45,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:42:45,222 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 135 [2022-07-21 08:42:45,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 133 transitions, 546 flow. Second operand has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:45,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:42:45,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 135 [2022-07-21 08:42:45,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:42:49,344 INFO L129 PetriNetUnfolder]: 18377/31822 cut-off events. [2022-07-21 08:42:49,344 INFO L130 PetriNetUnfolder]: For 50892/59987 co-relation queries the response was YES. [2022-07-21 08:42:49,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78278 conditions, 31822 events. 18377/31822 cut-off events. For 50892/59987 co-relation queries the response was YES. Maximal size of possible extension queue 1924. Compared 281232 event pairs, 1380 based on Foata normal form. 1316/31354 useless extension candidates. Maximal degree in co-relation 78198. Up to 9854 conditions per place. [2022-07-21 08:42:49,600 INFO L132 encePairwiseOnDemand]: 124/135 looper letters, 101 selfloop transitions, 20 changer transitions 0/229 dead transitions. [2022-07-21 08:42:49,601 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 229 transitions, 1196 flow [2022-07-21 08:42:49,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:42:49,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:42:49,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1187 transitions. [2022-07-21 08:42:49,603 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8792592592592593 [2022-07-21 08:42:49,603 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1187 transitions. [2022-07-21 08:42:49,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1187 transitions. [2022-07-21 08:42:49,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:42:49,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1187 transitions. [2022-07-21 08:42:49,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:49,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:49,608 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:49,608 INFO L186 Difference]: Start difference. First operand has 158 places, 133 transitions, 546 flow. Second operand 10 states and 1187 transitions. [2022-07-21 08:42:49,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 229 transitions, 1196 flow [2022-07-21 08:42:49,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 229 transitions, 1170 flow, removed 13 selfloop flow, removed 3 redundant places. [2022-07-21 08:42:49,742 INFO L242 Difference]: Finished difference. Result has 161 places, 151 transitions, 663 flow [2022-07-21 08:42:49,742 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=663, PETRI_PLACES=161, PETRI_TRANSITIONS=151} [2022-07-21 08:42:49,744 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 19 predicate places. [2022-07-21 08:42:49,744 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 151 transitions, 663 flow [2022-07-21 08:42:49,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:49,745 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:42:49,745 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:42:49,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:42:49,745 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:42:49,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:42:49,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1553476620, now seen corresponding path program 1 times [2022-07-21 08:42:49,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:42:49,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986477213] [2022-07-21 08:42:49,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:42:49,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:42:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:42:49,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:42:49,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:42:49,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986477213] [2022-07-21 08:42:49,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986477213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:42:49,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:42:49,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:42:49,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940646660] [2022-07-21 08:42:49,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:42:49,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:42:49,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:42:49,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:42:49,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:42:49,884 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 135 [2022-07-21 08:42:49,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 151 transitions, 663 flow. Second operand has 6 states, 6 states have (on average 112.5) internal successors, (675), 6 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:49,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:42:49,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 135 [2022-07-21 08:42:49,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:42:52,549 INFO L129 PetriNetUnfolder]: 7685/20850 cut-off events. [2022-07-21 08:42:52,549 INFO L130 PetriNetUnfolder]: For 29861/32828 co-relation queries the response was YES. [2022-07-21 08:42:52,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56504 conditions, 20850 events. 7685/20850 cut-off events. For 29861/32828 co-relation queries the response was YES. Maximal size of possible extension queue 1288. Compared 254478 event pairs, 2942 based on Foata normal form. 774/20215 useless extension candidates. Maximal degree in co-relation 56418. Up to 3792 conditions per place. [2022-07-21 08:42:52,820 INFO L132 encePairwiseOnDemand]: 129/135 looper letters, 74 selfloop transitions, 19 changer transitions 0/214 dead transitions. [2022-07-21 08:42:52,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 214 transitions, 1171 flow [2022-07-21 08:42:52,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:42:52,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:42:52,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1066 transitions. [2022-07-21 08:42:52,823 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8773662551440329 [2022-07-21 08:42:52,823 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1066 transitions. [2022-07-21 08:42:52,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1066 transitions. [2022-07-21 08:42:52,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:42:52,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1066 transitions. [2022-07-21 08:42:52,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.44444444444444) internal successors, (1066), 9 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:52,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:52,828 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:52,828 INFO L186 Difference]: Start difference. First operand has 161 places, 151 transitions, 663 flow. Second operand 9 states and 1066 transitions. [2022-07-21 08:42:52,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 214 transitions, 1171 flow [2022-07-21 08:42:52,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 214 transitions, 1157 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-07-21 08:42:52,976 INFO L242 Difference]: Finished difference. Result has 169 places, 162 transitions, 805 flow [2022-07-21 08:42:52,977 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=805, PETRI_PLACES=169, PETRI_TRANSITIONS=162} [2022-07-21 08:42:52,977 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 27 predicate places. [2022-07-21 08:42:52,978 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 162 transitions, 805 flow [2022-07-21 08:42:52,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.5) internal successors, (675), 6 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:52,978 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:42:52,978 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:42:52,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:42:52,979 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:42:52,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:42:52,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1599088068, now seen corresponding path program 1 times [2022-07-21 08:42:52,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:42:52,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799986209] [2022-07-21 08:42:52,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:42:52,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:42:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:42:53,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:42:53,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:42:53,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799986209] [2022-07-21 08:42:53,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799986209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:42:53,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:42:53,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:42:53,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858160977] [2022-07-21 08:42:53,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:42:53,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:42:53,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:42:53,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:42:53,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:42:53,080 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 135 [2022-07-21 08:42:53,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 162 transitions, 805 flow. Second operand has 7 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:53,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:42:53,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 135 [2022-07-21 08:42:53,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:42:59,010 INFO L129 PetriNetUnfolder]: 25369/43958 cut-off events. [2022-07-21 08:42:59,010 INFO L130 PetriNetUnfolder]: For 104815/114790 co-relation queries the response was YES. [2022-07-21 08:42:59,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142734 conditions, 43958 events. 25369/43958 cut-off events. For 104815/114790 co-relation queries the response was YES. Maximal size of possible extension queue 2893. Compared 413198 event pairs, 1555 based on Foata normal form. 2146/44478 useless extension candidates. Maximal degree in co-relation 142647. Up to 9552 conditions per place. [2022-07-21 08:42:59,440 INFO L132 encePairwiseOnDemand]: 124/135 looper letters, 127 selfloop transitions, 38 changer transitions 0/284 dead transitions. [2022-07-21 08:42:59,441 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 284 transitions, 1825 flow [2022-07-21 08:42:59,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:42:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:42:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1548 transitions. [2022-07-21 08:42:59,444 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.882051282051282 [2022-07-21 08:42:59,444 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1548 transitions. [2022-07-21 08:42:59,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1548 transitions. [2022-07-21 08:42:59,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:42:59,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1548 transitions. [2022-07-21 08:42:59,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 119.07692307692308) internal successors, (1548), 13 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:59,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:59,450 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:42:59,450 INFO L186 Difference]: Start difference. First operand has 169 places, 162 transitions, 805 flow. Second operand 13 states and 1548 transitions. [2022-07-21 08:42:59,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 284 transitions, 1825 flow [2022-07-21 08:43:00,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 284 transitions, 1807 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-07-21 08:43:00,598 INFO L242 Difference]: Finished difference. Result has 186 places, 182 transitions, 1080 flow [2022-07-21 08:43:00,598 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1080, PETRI_PLACES=186, PETRI_TRANSITIONS=182} [2022-07-21 08:43:00,600 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 44 predicate places. [2022-07-21 08:43:00,601 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 182 transitions, 1080 flow [2022-07-21 08:43:00,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:00,609 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:00,609 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:43:00,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:43:00,609 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:43:00,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:00,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1344298672, now seen corresponding path program 1 times [2022-07-21 08:43:00,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:00,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613598348] [2022-07-21 08:43:00,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:00,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:00,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:00,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:00,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613598348] [2022-07-21 08:43:00,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613598348] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:00,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:00,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:43:00,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487677748] [2022-07-21 08:43:00,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:00,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:43:00,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:00,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:43:00,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:43:00,807 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 135 [2022-07-21 08:43:00,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 182 transitions, 1080 flow. Second operand has 8 states, 8 states have (on average 110.125) internal successors, (881), 8 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:00,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:00,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 135 [2022-07-21 08:43:00,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:07,689 INFO L129 PetriNetUnfolder]: 24400/42056 cut-off events. [2022-07-21 08:43:07,690 INFO L130 PetriNetUnfolder]: For 175686/185497 co-relation queries the response was YES. [2022-07-21 08:43:08,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 164975 conditions, 42056 events. 24400/42056 cut-off events. For 175686/185497 co-relation queries the response was YES. Maximal size of possible extension queue 2897. Compared 396087 event pairs, 1413 based on Foata normal form. 1703/42172 useless extension candidates. Maximal degree in co-relation 164880. Up to 9214 conditions per place. [2022-07-21 08:43:08,222 INFO L132 encePairwiseOnDemand]: 124/135 looper letters, 122 selfloop transitions, 58 changer transitions 41/329 dead transitions. [2022-07-21 08:43:08,223 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 329 transitions, 2480 flow [2022-07-21 08:43:08,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:43:08,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 08:43:08,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1908 transitions. [2022-07-21 08:43:08,226 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8833333333333333 [2022-07-21 08:43:08,226 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1908 transitions. [2022-07-21 08:43:08,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1908 transitions. [2022-07-21 08:43:08,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:08,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1908 transitions. [2022-07-21 08:43:08,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 119.25) internal successors, (1908), 16 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:08,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 135.0) internal successors, (2295), 17 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:08,234 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 135.0) internal successors, (2295), 17 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:08,234 INFO L186 Difference]: Start difference. First operand has 186 places, 182 transitions, 1080 flow. Second operand 16 states and 1908 transitions. [2022-07-21 08:43:08,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 329 transitions, 2480 flow [2022-07-21 08:43:18,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 329 transitions, 2355 flow, removed 48 selfloop flow, removed 6 redundant places. [2022-07-21 08:43:18,795 INFO L242 Difference]: Finished difference. Result has 199 places, 197 transitions, 1318 flow [2022-07-21 08:43:18,795 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1318, PETRI_PLACES=199, PETRI_TRANSITIONS=197} [2022-07-21 08:43:18,796 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 57 predicate places. [2022-07-21 08:43:18,796 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 197 transitions, 1318 flow [2022-07-21 08:43:18,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 110.125) internal successors, (881), 8 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:18,797 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:18,797 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:43:18,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:43:18,797 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:43:18,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:18,797 INFO L85 PathProgramCache]: Analyzing trace with hash 930517507, now seen corresponding path program 1 times [2022-07-21 08:43:18,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:18,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842294114] [2022-07-21 08:43:18,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:18,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:19,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:19,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:19,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842294114] [2022-07-21 08:43:19,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842294114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:19,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:19,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 08:43:19,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478850226] [2022-07-21 08:43:19,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:19,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 08:43:19,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:19,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 08:43:19,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:43:19,052 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 135 [2022-07-21 08:43:19,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 197 transitions, 1318 flow. Second operand has 14 states, 14 states have (on average 103.92857142857143) internal successors, (1455), 14 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:19,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:19,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 135 [2022-07-21 08:43:19,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:22,059 INFO L129 PetriNetUnfolder]: 8493/26987 cut-off events. [2022-07-21 08:43:22,060 INFO L130 PetriNetUnfolder]: For 137092/142757 co-relation queries the response was YES. [2022-07-21 08:43:22,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104530 conditions, 26987 events. 8493/26987 cut-off events. For 137092/142757 co-relation queries the response was YES. Maximal size of possible extension queue 3530. Compared 399345 event pairs, 128 based on Foata normal form. 20/25125 useless extension candidates. Maximal degree in co-relation 104422. Up to 6619 conditions per place. [2022-07-21 08:43:22,716 INFO L132 encePairwiseOnDemand]: 121/135 looper letters, 64 selfloop transitions, 15 changer transitions 14/260 dead transitions. [2022-07-21 08:43:22,716 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 260 transitions, 1800 flow [2022-07-21 08:43:22,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:43:22,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:43:22,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1515 transitions. [2022-07-21 08:43:22,719 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8015873015873016 [2022-07-21 08:43:22,719 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1515 transitions. [2022-07-21 08:43:22,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1515 transitions. [2022-07-21 08:43:22,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:22,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1515 transitions. [2022-07-21 08:43:22,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.21428571428571) internal successors, (1515), 14 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:22,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 135.0) internal successors, (2025), 15 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:22,726 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 135.0) internal successors, (2025), 15 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:22,726 INFO L186 Difference]: Start difference. First operand has 199 places, 197 transitions, 1318 flow. Second operand 14 states and 1515 transitions. [2022-07-21 08:43:22,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 260 transitions, 1800 flow [2022-07-21 08:43:39,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 260 transitions, 1419 flow, removed 148 selfloop flow, removed 20 redundant places. [2022-07-21 08:43:39,139 INFO L242 Difference]: Finished difference. Result has 193 places, 207 transitions, 1088 flow [2022-07-21 08:43:39,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1088, PETRI_PLACES=193, PETRI_TRANSITIONS=207} [2022-07-21 08:43:39,140 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 51 predicate places. [2022-07-21 08:43:39,140 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 207 transitions, 1088 flow [2022-07-21 08:43:39,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 103.92857142857143) internal successors, (1455), 14 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:39,141 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:39,141 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:43:39,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:43:39,142 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:43:39,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:39,142 INFO L85 PathProgramCache]: Analyzing trace with hash 212649650, now seen corresponding path program 1 times [2022-07-21 08:43:39,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:39,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424474538] [2022-07-21 08:43:39,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:39,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:39,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:39,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:39,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424474538] [2022-07-21 08:43:39,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424474538] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:39,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:39,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:43:39,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181105932] [2022-07-21 08:43:39,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:39,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:43:39,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:39,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:43:39,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:43:39,265 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 135 [2022-07-21 08:43:39,266 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 207 transitions, 1088 flow. Second operand has 7 states, 7 states have (on average 107.28571428571429) internal successors, (751), 7 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:39,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:39,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 135 [2022-07-21 08:43:39,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:44,412 INFO L129 PetriNetUnfolder]: 14031/42591 cut-off events. [2022-07-21 08:43:44,412 INFO L130 PetriNetUnfolder]: For 68736/70435 co-relation queries the response was YES. [2022-07-21 08:43:44,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118704 conditions, 42591 events. 14031/42591 cut-off events. For 68736/70435 co-relation queries the response was YES. Maximal size of possible extension queue 5619. Compared 657462 event pairs, 462 based on Foata normal form. 43/39962 useless extension candidates. Maximal degree in co-relation 118605. Up to 4791 conditions per place. [2022-07-21 08:43:44,954 INFO L132 encePairwiseOnDemand]: 124/135 looper letters, 80 selfloop transitions, 21 changer transitions 48/300 dead transitions. [2022-07-21 08:43:44,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 300 transitions, 2006 flow [2022-07-21 08:43:44,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:43:44,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:43:44,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1142 transitions. [2022-07-21 08:43:44,957 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.845925925925926 [2022-07-21 08:43:44,957 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1142 transitions. [2022-07-21 08:43:44,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1142 transitions. [2022-07-21 08:43:44,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:44,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1142 transitions. [2022-07-21 08:43:44,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 114.2) internal successors, (1142), 10 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:44,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:44,963 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:44,963 INFO L186 Difference]: Start difference. First operand has 193 places, 207 transitions, 1088 flow. Second operand 10 states and 1142 transitions. [2022-07-21 08:43:44,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 300 transitions, 2006 flow [2022-07-21 08:43:57,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 300 transitions, 1972 flow, removed 13 selfloop flow, removed 7 redundant places. [2022-07-21 08:43:57,479 INFO L242 Difference]: Finished difference. Result has 201 places, 214 transitions, 1273 flow [2022-07-21 08:43:57,480 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1273, PETRI_PLACES=201, PETRI_TRANSITIONS=214} [2022-07-21 08:43:57,481 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 59 predicate places. [2022-07-21 08:43:57,481 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 214 transitions, 1273 flow [2022-07-21 08:43:57,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.28571428571429) internal successors, (751), 7 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:57,481 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:57,482 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:43:57,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:43:57,482 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:43:57,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:57,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1000270089, now seen corresponding path program 2 times [2022-07-21 08:43:57,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:57,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406064255] [2022-07-21 08:43:57,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:57,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:57,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:57,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:57,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406064255] [2022-07-21 08:43:57,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406064255] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:57,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:57,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:43:57,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316460570] [2022-07-21 08:43:57,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:57,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:43:57,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:57,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:43:57,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:43:57,584 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 135 [2022-07-21 08:43:57,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 214 transitions, 1273 flow. Second operand has 9 states, 9 states have (on average 110.22222222222223) internal successors, (992), 9 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:57,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:57,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 135 [2022-07-21 08:43:57,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand