/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:54:38,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:54:38,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:54:38,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:54:38,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:54:38,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:54:38,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:54:38,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:54:38,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:54:38,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:54:38,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:54:38,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:54:38,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:54:38,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:54:38,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:54:38,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:54:38,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:54:38,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:54:38,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:54:38,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:54:38,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:54:38,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:54:38,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:54:38,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:54:38,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:54:38,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:54:38,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:54:38,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:54:38,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:54:38,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:54:38,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:54:38,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:54:38,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:54:38,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:54:38,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:54:38,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:54:38,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:54:38,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:54:38,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:54:38,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:54:38,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:54:38,154 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:54:38,199 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:54:38,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:54:38,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:54:38,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:54:38,202 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:54:38,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:54:38,202 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:54:38,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:54:38,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:54:38,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:54:38,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:54:38,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:54:38,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:54:38,205 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:54:38,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:54:38,205 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:54:38,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:54:38,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:54:38,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:54:38,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:54:38,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:54:38,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:54:38,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:54:38,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:54:38,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:54:38,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:54:38,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:54:38,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:54:38,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:54:38,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:54:38,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:54:38,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:54:38,529 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:54:38,532 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:54:38,532 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:54:38,533 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-12 19:54:38,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6436062df/a6684a5087e34280918f2c35316039c6/FLAG2ae7f8bd9 [2020-10-12 19:54:39,203 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:54:39,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-12 19:54:39,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6436062df/a6684a5087e34280918f2c35316039c6/FLAG2ae7f8bd9 [2020-10-12 19:54:39,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6436062df/a6684a5087e34280918f2c35316039c6 [2020-10-12 19:54:39,382 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:54:39,384 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:54:39,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:54:39,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:54:39,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:54:39,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:54:39" (1/1) ... [2020-10-12 19:54:39,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c54a14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:39, skipping insertion in model container [2020-10-12 19:54:39,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:54:39" (1/1) ... [2020-10-12 19:54:39,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:54:39,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:54:40,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:54:40,670 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:54:41,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:54:41,063 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:54:41,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:41 WrapperNode [2020-10-12 19:54:41,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:54:41,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:54:41,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:54:41,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:54:41,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:41" (1/1) ... [2020-10-12 19:54:41,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:41" (1/1) ... [2020-10-12 19:54:41,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:41" (1/1) ... [2020-10-12 19:54:41,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:41" (1/1) ... [2020-10-12 19:54:41,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:41" (1/1) ... [2020-10-12 19:54:41,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:41" (1/1) ... [2020-10-12 19:54:41,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:41" (1/1) ... [2020-10-12 19:54:41,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:54:41,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:54:41,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:54:41,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:54:41,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:54:41,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:54:41,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:54:41,389 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:54:41,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:54:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:54:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:54:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:54:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:54:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:54:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:54:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:54:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:54:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:54:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:54:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:54:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:54:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:54:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:54:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:54:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:54:45,008 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:54:45,008 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:54:45,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:54:45 BoogieIcfgContainer [2020-10-12 19:54:45,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:54:45,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:54:45,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:54:45,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:54:45,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:54:39" (1/3) ... [2020-10-12 19:54:45,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff425cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:54:45, skipping insertion in model container [2020-10-12 19:54:45,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:41" (2/3) ... [2020-10-12 19:54:45,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff425cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:54:45, skipping insertion in model container [2020-10-12 19:54:45,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:54:45" (3/3) ... [2020-10-12 19:54:45,034 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-12 19:54:45,044 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:54:45,052 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-12 19:54:45,065 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-12 19:54:45,093 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:54:45,093 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:54:45,093 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:54:45,093 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:54:45,093 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:54:45,094 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:54:45,094 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:54:45,094 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:54:45,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states. [2020-10-12 19:54:45,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:54:45,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:54:45,158 INFO L422 BasicCegarLoop]: 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] [2020-10-12 19:54:45,159 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:54:45,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:54:45,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1769381908, now seen corresponding path program 1 times [2020-10-12 19:54:45,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:54:45,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319876460] [2020-10-12 19:54:45,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:54:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:54:45,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:46,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:47,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:48,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:48,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:49,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:50,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:50,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:54:50,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:54:50,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:54:50,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:54:50,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:54:50,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:54:50,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:54:50,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 19:54:50,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:54:52,551 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-12 19:54:52,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:54:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:54:52,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:52,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:54:52,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:54:52,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:54:52,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 19:54:52,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:54:52,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:54:52,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:54:52,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:54:52,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:54:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:54:52,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319876460] [2020-10-12 19:54:52,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:54:52,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:54:52,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904249978] [2020-10-12 19:54:52,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:54:52,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:54:52,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:54:52,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:54:52,729 INFO L87 Difference]: Start difference. First operand 1195 states. Second operand 15 states. [2020-10-12 19:54:52,912 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-10-12 19:54:56,089 WARN L193 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 541 DAG size of output: 533 [2020-10-12 19:54:57,343 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2020-10-12 19:55:15,204 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-10-12 19:55:18,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:55:18,988 INFO L93 Difference]: Finished difference Result 2778 states and 4568 transitions. [2020-10-12 19:55:18,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 19:55:18,991 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-12 19:55:18,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:55:19,031 INFO L225 Difference]: With dead ends: 2778 [2020-10-12 19:55:19,032 INFO L226 Difference]: Without dead ends: 2636 [2020-10-12 19:55:19,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=258, Invalid=798, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 19:55:19,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2020-10-12 19:55:19,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 1201. [2020-10-12 19:55:19,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1201 states. [2020-10-12 19:55:19,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1542 transitions. [2020-10-12 19:55:19,190 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1542 transitions. Word has length 56 [2020-10-12 19:55:19,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:55:19,191 INFO L479 AbstractCegarLoop]: Abstraction has 1201 states and 1542 transitions. [2020-10-12 19:55:19,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:55:19,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1542 transitions. [2020-10-12 19:55:19,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:55:19,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:55:19,197 INFO L422 BasicCegarLoop]: 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] [2020-10-12 19:55:19,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:55:19,197 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:55:19,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:55:19,198 INFO L82 PathProgramCache]: Analyzing trace with hash -319702236, now seen corresponding path program 1 times [2020-10-12 19:55:19,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:55:19,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82470059] [2020-10-12 19:55:19,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:55:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:55:19,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:19,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:20,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:20,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:20,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:21,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:22,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:22,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:23,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:23,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:24,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:24,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:55:24,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:55:24,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:55:24,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-12 19:55:24,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:55:24,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:55:24,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:55:24,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 19:55:24,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:55:26,392 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-12 19:55:26,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:55:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:55:26,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:26,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:55:26,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:55:26,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:55:26,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 19:55:26,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:55:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:55:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:55:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:55:26,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:55:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:55:26,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82470059] [2020-10-12 19:55:26,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:55:26,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:55:26,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226872143] [2020-10-12 19:55:26,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:55:26,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:55:26,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:55:26,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:55:26,537 INFO L87 Difference]: Start difference. First operand 1201 states and 1542 transitions. Second operand 15 states. [2020-10-12 19:55:26,682 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-12 19:55:30,058 WARN L193 SmtUtils]: Spent 3.27 s on a formula simplification. DAG size of input: 542 DAG size of output: 539 [2020-10-12 19:55:48,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:55:48,735 INFO L93 Difference]: Finished difference Result 2866 states and 3792 transitions. [2020-10-12 19:55:48,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:55:48,736 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-12 19:55:48,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:55:48,751 INFO L225 Difference]: With dead ends: 2866 [2020-10-12 19:55:48,752 INFO L226 Difference]: Without dead ends: 2774 [2020-10-12 19:55:48,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2020-10-12 19:55:48,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2020-10-12 19:55:48,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 1198. [2020-10-12 19:55:48,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2020-10-12 19:55:48,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1536 transitions. [2020-10-12 19:55:48,842 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1536 transitions. Word has length 56 [2020-10-12 19:55:48,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:55:48,843 INFO L479 AbstractCegarLoop]: Abstraction has 1198 states and 1536 transitions. [2020-10-12 19:55:48,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:55:48,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1536 transitions. [2020-10-12 19:55:48,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:55:48,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:55:48,846 INFO L422 BasicCegarLoop]: 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] [2020-10-12 19:55:48,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:55:48,847 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:55:48,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:55:48,847 INFO L82 PathProgramCache]: Analyzing trace with hash 557524829, now seen corresponding path program 1 times [2020-10-12 19:55:48,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:55:48,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829642856] [2020-10-12 19:55:48,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:55:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:55:48,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:49,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:49,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:49,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:49,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:50,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:52,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:52,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:52,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:53,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:53,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:55:53,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:55:53,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:55:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:55:53,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:55:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:55:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:55:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 19:55:53,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:55:55,872 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-12 19:55:55,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:55:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:55:55,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:55:55,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:55:55,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:55:55,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:55:55,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 19:55:55,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:55:55,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:55:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:55:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:55:55,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:55:55,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:55:55,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829642856] [2020-10-12 19:55:55,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:55:55,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:55:55,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832793420] [2020-10-12 19:55:55,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:55:55,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:55:55,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:55:55,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:55:55,988 INFO L87 Difference]: Start difference. First operand 1198 states and 1536 transitions. Second operand 15 states. [2020-10-12 19:55:59,185 WARN L193 SmtUtils]: Spent 3.03 s on a formula simplification. DAG size of input: 524 DAG size of output: 522 [2020-10-12 19:56:20,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:56:20,112 INFO L93 Difference]: Finished difference Result 4611 states and 6294 transitions. [2020-10-12 19:56:20,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 19:56:20,113 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-12 19:56:20,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:56:20,134 INFO L225 Difference]: With dead ends: 4611 [2020-10-12 19:56:20,134 INFO L226 Difference]: Without dead ends: 4208 [2020-10-12 19:56:20,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=370, Invalid=1190, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 19:56:20,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4208 states. [2020-10-12 19:56:20,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4208 to 2510. [2020-10-12 19:56:20,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2510 states. [2020-10-12 19:56:20,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2510 states to 2510 states and 3298 transitions. [2020-10-12 19:56:20,400 INFO L78 Accepts]: Start accepts. Automaton has 2510 states and 3298 transitions. Word has length 56 [2020-10-12 19:56:20,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:56:20,406 INFO L479 AbstractCegarLoop]: Abstraction has 2510 states and 3298 transitions. [2020-10-12 19:56:20,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:56:20,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2510 states and 3298 transitions. [2020-10-12 19:56:20,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 19:56:20,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:56:20,413 INFO L422 BasicCegarLoop]: 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] [2020-10-12 19:56:20,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:56:20,414 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:56:20,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:56:20,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1477057161, now seen corresponding path program 1 times [2020-10-12 19:56:20,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:56:20,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618863207] [2020-10-12 19:56:20,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:56:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:56:20,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:20,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:20,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:20,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:21,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:21,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:21,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:22,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:22,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:24,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:24,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:24,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:24,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:25,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:56:25,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 19:56:25,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:56:25,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:56:25,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:56:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:56:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:56:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 19:56:25,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:56:27,390 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-12 19:56:27,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:56:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:56:27,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:27,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:56:27,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:56:27,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:56:27,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 19:56:27,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:56:27,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:56:27,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:56:27,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:56:27,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:56:27,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:56:27,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618863207] [2020-10-12 19:56:27,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:56:27,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:56:27,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24571918] [2020-10-12 19:56:27,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:56:27,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:56:27,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:56:27,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:56:27,484 INFO L87 Difference]: Start difference. First operand 2510 states and 3298 transitions. Second operand 11 states. [2020-10-12 19:56:29,024 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification that was a NOOP. DAG size: 508 [2020-10-12 19:56:42,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:56:42,915 INFO L93 Difference]: Finished difference Result 10306 states and 14909 transitions. [2020-10-12 19:56:42,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-12 19:56:42,916 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-12 19:56:42,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:56:42,959 INFO L225 Difference]: With dead ends: 10306 [2020-10-12 19:56:42,959 INFO L226 Difference]: Without dead ends: 9134 [2020-10-12 19:56:42,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=667, Invalid=2639, Unknown=0, NotChecked=0, Total=3306 [2020-10-12 19:56:42,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9134 states. [2020-10-12 19:56:43,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9134 to 4839. [2020-10-12 19:56:43,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4839 states. [2020-10-12 19:56:43,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4839 states to 4839 states and 6815 transitions. [2020-10-12 19:56:43,778 INFO L78 Accepts]: Start accepts. Automaton has 4839 states and 6815 transitions. Word has length 57 [2020-10-12 19:56:43,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:56:43,779 INFO L479 AbstractCegarLoop]: Abstraction has 4839 states and 6815 transitions. [2020-10-12 19:56:43,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:56:43,779 INFO L276 IsEmpty]: Start isEmpty. Operand 4839 states and 6815 transitions. [2020-10-12 19:56:43,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 19:56:43,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:56:43,784 INFO L422 BasicCegarLoop]: 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] [2020-10-12 19:56:43,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:56:43,785 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:56:43,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:56:43,785 INFO L82 PathProgramCache]: Analyzing trace with hash -916874783, now seen corresponding path program 1 times [2020-10-12 19:56:43,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:56:43,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841788853] [2020-10-12 19:56:43,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:56:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:56:43,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:43,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:43,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:45,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:45,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:46,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:46,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:46,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:47,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:47,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:48,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:56:48,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 19:56:48,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:56:48,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-12 19:56:48,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:56:48,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 19:56:48,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:56:48,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 19:56:48,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:56:50,740 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-12 19:56:50,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:56:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:56:50,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:56:50,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:56:50,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:56:50,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:56:50,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 19:56:50,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:56:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:56:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:56:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:56:50,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:56:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:56:50,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841788853] [2020-10-12 19:56:50,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:56:50,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:56:50,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252862787] [2020-10-12 19:56:50,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 19:56:50,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:56:50,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 19:56:50,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:56:50,825 INFO L87 Difference]: Start difference. First operand 4839 states and 6815 transitions. Second operand 17 states. [2020-10-12 19:56:50,983 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-12 19:56:54,545 WARN L193 SmtUtils]: Spent 3.48 s on a formula simplification. DAG size of input: 546 DAG size of output: 541 [2020-10-12 19:56:55,287 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-10-12 19:57:09,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:57:09,914 INFO L93 Difference]: Finished difference Result 11376 states and 16824 transitions. [2020-10-12 19:57:09,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 19:57:09,915 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-10-12 19:57:09,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:57:09,952 INFO L225 Difference]: With dead ends: 11376 [2020-10-12 19:57:09,953 INFO L226 Difference]: Without dead ends: 8473 [2020-10-12 19:57:09,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 19:57:09,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8473 states. [2020-10-12 19:57:10,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8473 to 4569. [2020-10-12 19:57:10,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4569 states. [2020-10-12 19:57:10,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4569 states to 4569 states and 6491 transitions. [2020-10-12 19:57:10,510 INFO L78 Accepts]: Start accepts. Automaton has 4569 states and 6491 transitions. Word has length 58 [2020-10-12 19:57:10,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:57:10,511 INFO L479 AbstractCegarLoop]: Abstraction has 4569 states and 6491 transitions. [2020-10-12 19:57:10,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 19:57:10,511 INFO L276 IsEmpty]: Start isEmpty. Operand 4569 states and 6491 transitions. [2020-10-12 19:57:10,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 19:57:10,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:57:10,515 INFO L422 BasicCegarLoop]: 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] [2020-10-12 19:57:10,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:57:10,516 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:57:10,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:57:10,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1844525953, now seen corresponding path program 1 times [2020-10-12 19:57:10,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:57:10,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550747217] [2020-10-12 19:57:10,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:57:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:57:10,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:10,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:10,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:11,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:11,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:13,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:14,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:14,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:14,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:15,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:15,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:15,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:15,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:57:15,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 19:57:15,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:57:15,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-12 19:57:15,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:57:15,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 19:57:15,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:57:15,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 19:57:15,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:57:17,626 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-12 19:57:17,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:57:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:57:17,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:17,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:57:17,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:57:17,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:57:17,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 19:57:17,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:57:17,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:57:17,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:57:17,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:57:17,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:57:17,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:57:17,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550747217] [2020-10-12 19:57:17,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:57:17,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:57:17,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916449578] [2020-10-12 19:57:17,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 19:57:17,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:57:17,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 19:57:17,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:57:17,744 INFO L87 Difference]: Start difference. First operand 4569 states and 6491 transitions. Second operand 17 states. [2020-10-12 19:57:17,883 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-10-12 19:57:21,353 WARN L193 SmtUtils]: Spent 3.39 s on a formula simplification. DAG size of input: 532 DAG size of output: 531 [2020-10-12 19:57:22,204 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-10-12 19:57:39,059 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-10-12 19:57:40,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:57:40,226 INFO L93 Difference]: Finished difference Result 20334 states and 30382 transitions. [2020-10-12 19:57:40,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-12 19:57:40,227 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-10-12 19:57:40,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:57:40,273 INFO L225 Difference]: With dead ends: 20334 [2020-10-12 19:57:40,273 INFO L226 Difference]: Without dead ends: 20328 [2020-10-12 19:57:40,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=556, Invalid=1994, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 19:57:40,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20328 states. [2020-10-12 19:57:40,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20328 to 4569. [2020-10-12 19:57:40,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4569 states. [2020-10-12 19:57:40,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4569 states to 4569 states and 6490 transitions. [2020-10-12 19:57:40,948 INFO L78 Accepts]: Start accepts. Automaton has 4569 states and 6490 transitions. Word has length 58 [2020-10-12 19:57:40,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:57:40,949 INFO L479 AbstractCegarLoop]: Abstraction has 4569 states and 6490 transitions. [2020-10-12 19:57:40,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 19:57:40,949 INFO L276 IsEmpty]: Start isEmpty. Operand 4569 states and 6490 transitions. [2020-10-12 19:57:40,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 19:57:40,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:57:40,953 INFO L422 BasicCegarLoop]: 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] [2020-10-12 19:57:40,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:57:40,954 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:57:40,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:57:40,954 INFO L82 PathProgramCache]: Analyzing trace with hash -713872931, now seen corresponding path program 1 times [2020-10-12 19:57:40,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:57:40,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372233179] [2020-10-12 19:57:40,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:57:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:57:41,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:41,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:41,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:41,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:41,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:41,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:41,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:42,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:43,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:44,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:46,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:57:46,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 19:57:46,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:57:46,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 19:57:46,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:57:46,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:57:46,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:57:46,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 19:57:46,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:57:47,800 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-12 19:57:47,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:57:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:57:47,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:47,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:57:47,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:57:47,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:57:47,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 19:57:47,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:57:47,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:57:47,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:57:47,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:57:47,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:57:47,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:57:47,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372233179] [2020-10-12 19:57:47,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:57:47,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:57:47,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577054487] [2020-10-12 19:57:47,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:57:47,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:57:47,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:57:47,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:57:47,880 INFO L87 Difference]: Start difference. First operand 4569 states and 6490 transitions. Second operand 13 states. [2020-10-12 19:57:51,308 WARN L193 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 522 DAG size of output: 521 [2020-10-12 19:58:03,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:58:03,239 INFO L93 Difference]: Finished difference Result 18455 states and 27478 transitions. [2020-10-12 19:58:03,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 19:58:03,240 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 58 [2020-10-12 19:58:03,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:58:03,263 INFO L225 Difference]: With dead ends: 18455 [2020-10-12 19:58:03,264 INFO L226 Difference]: Without dead ends: 14680 [2020-10-12 19:58:03,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2020-10-12 19:58:03,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14680 states. [2020-10-12 19:58:04,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14680 to 8303. [2020-10-12 19:58:04,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8303 states. [2020-10-12 19:58:04,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8303 states to 8303 states and 12129 transitions. [2020-10-12 19:58:04,371 INFO L78 Accepts]: Start accepts. Automaton has 8303 states and 12129 transitions. Word has length 58 [2020-10-12 19:58:04,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:58:04,372 INFO L479 AbstractCegarLoop]: Abstraction has 8303 states and 12129 transitions. [2020-10-12 19:58:04,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:58:04,372 INFO L276 IsEmpty]: Start isEmpty. Operand 8303 states and 12129 transitions. [2020-10-12 19:58:04,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 19:58:04,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:58:04,375 INFO L422 BasicCegarLoop]: 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] [2020-10-12 19:58:04,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:58:04,376 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:58:04,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:58:04,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1677539118, now seen corresponding path program 1 times [2020-10-12 19:58:04,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:58:04,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245626921] [2020-10-12 19:58:04,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:58:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:04,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:04,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:04,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:05,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:05,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:05,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:05,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:06,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:06,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:06,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:07,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:07,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:07,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:08,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:09,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:09,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:09,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 19:58:09,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:58:09,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:58:09,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:58:09,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:58:09,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 19:58:09,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:11,401 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-12 19:58:11,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:58:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:11,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:11,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:11,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:58:11,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:58:11,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 19:58:11,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:11,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:58:11,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:58:11,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:58:11,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:58:11,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245626921] [2020-10-12 19:58:11,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:58:11,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:58:11,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750765449] [2020-10-12 19:58:11,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:58:11,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:58:11,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:58:11,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:58:11,478 INFO L87 Difference]: Start difference. First operand 8303 states and 12129 transitions. Second operand 16 states. [2020-10-12 19:58:11,638 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2020-10-12 19:58:15,123 WARN L193 SmtUtils]: Spent 3.39 s on a formula simplification. DAG size of input: 533 DAG size of output: 529 [2020-10-12 19:58:15,906 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-10-12 19:58:16,572 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-10-12 19:58:16,891 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-12 19:58:18,265 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-10-12 19:58:20,376 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2020-10-12 19:58:20,930 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36