/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=NARROWEST --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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:56:53,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:56:53,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:56:53,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:56:53,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:56:53,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:56:53,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:56:53,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:56:53,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:56:53,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:56:53,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:56:53,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:56:53,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:56:53,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:56:53,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:56:53,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:56:53,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:56:53,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:56:53,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:56:53,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:56:53,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:56:53,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:56:53,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:56:53,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:56:53,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:56:53,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:56:53,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:56:53,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:56:53,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:56:53,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:56:53,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:56:53,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:56:53,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:56:53,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:56:53,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:56:53,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:56:53,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:56:53,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:56:53,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:56:53,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:56:53,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:56:53,233 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 [2020-10-13 14:56:53,269 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:56:53,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:56:53,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:56:53,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:56:53,272 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:56:53,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:56:53,273 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:56:53,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:56:53,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:56:53,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:56:53,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:56:53,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:56:53,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:56:53,275 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:56:53,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:56:53,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:56:53,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:56:53,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:56:53,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:56:53,276 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:56:53,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:56:53,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:56:53,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:56:53,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:56:53,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:56:53,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:56:53,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:56:53,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:56:53,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:56:53,278 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:56:53,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:56:53,589 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:56:53,593 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:56:53,595 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:56:53,595 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:56:53,596 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:56:53,677 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82c2141b4/0b1a9afaa88f482cb9fda7f1c8e29a89/FLAGb0fb8592d [2020-10-13 14:56:54,267 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:56:54,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:56:54,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82c2141b4/0b1a9afaa88f482cb9fda7f1c8e29a89/FLAGb0fb8592d [2020-10-13 14:56:54,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82c2141b4/0b1a9afaa88f482cb9fda7f1c8e29a89 [2020-10-13 14:56:54,545 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:56:54,547 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:56:54,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:56:54,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:56:54,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:56:54,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:56:54" (1/1) ... [2020-10-13 14:56:54,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@261564d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:54, skipping insertion in model container [2020-10-13 14:56:54,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:56:54" (1/1) ... [2020-10-13 14:56:54,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:56:54,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:56:55,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:56:55,355 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:56:55,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:56:55,623 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:56:55,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:55 WrapperNode [2020-10-13 14:56:55,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:56:55,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:56:55,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:56:55,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:56:55,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:55" (1/1) ... [2020-10-13 14:56:55,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:55" (1/1) ... [2020-10-13 14:56:55,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:55" (1/1) ... [2020-10-13 14:56:55,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:55" (1/1) ... [2020-10-13 14:56:55,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:55" (1/1) ... [2020-10-13 14:56:55,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:55" (1/1) ... [2020-10-13 14:56:55,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:55" (1/1) ... [2020-10-13 14:56:55,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:56:55,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:56:55,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:56:55,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:56:55,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:55" (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 [2020-10-13 14:56:55,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:56:55,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:56:55,843 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:56:55,844 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:56:55,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:56:55,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:56:55,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:56:55,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:56:55,845 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:56:55,846 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:56:55,846 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:56:55,846 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:56:55,846 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:56:55,846 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:56:55,847 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:56:55,847 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:56:55,848 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:56:55,848 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:56:55,848 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:56:55,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:56:55,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:56:57,562 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:56:57,563 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:56:57,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:56:57 BoogieIcfgContainer [2020-10-13 14:56:57,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:56:57,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:56:57,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:56:57,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:56:57,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:56:54" (1/3) ... [2020-10-13 14:56:57,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15eb2283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:56:57, skipping insertion in model container [2020-10-13 14:56:57,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:55" (2/3) ... [2020-10-13 14:56:57,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15eb2283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:56:57, skipping insertion in model container [2020-10-13 14:56:57,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:56:57" (3/3) ... [2020-10-13 14:56:57,579 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:56:57,590 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:56:57,598 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-13 14:56:57,612 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-13 14:56:57,641 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:56:57,641 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:56:57,641 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:56:57,641 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:56:57,642 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:56:57,642 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:56:57,642 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:56:57,642 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:56:57,682 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states. [2020-10-13 14:56:57,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 14:56:57,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:56:57,720 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:56:57,721 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:56:57,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:56:57,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1537788428, now seen corresponding path program 1 times [2020-10-13 14:56:57,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:56:57,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910466505] [2020-10-13 14:56:57,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:56:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:56:58,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:58,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:59,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:59,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:59,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:59,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:59,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:59,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:00,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:01,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:01,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:01,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:03,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:03,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:03,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 14:57:03,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:57:03,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-13 14:57:03,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:03,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:57:03,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:57:03,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:57:03,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:57:04,023 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:57:04,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:57:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:04,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:04,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:04,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:57:04,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:57:04,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 14:57:04,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:04,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:57:04,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:57:04,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:57:04,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:57:04,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:57:04,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910466505] [2020-10-13 14:57:04,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:57:04,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:57:04,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766023598] [2020-10-13 14:57:04,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:57:04,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:57:04,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:57:04,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:57:04,215 INFO L87 Difference]: Start difference. First operand 429 states. Second operand 5 states. [2020-10-13 14:57:09,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:57:09,515 INFO L93 Difference]: Finished difference Result 1229 states and 2184 transitions. [2020-10-13 14:57:09,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:57:09,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-13 14:57:09,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:57:09,541 INFO L225 Difference]: With dead ends: 1229 [2020-10-13 14:57:09,541 INFO L226 Difference]: Without dead ends: 821 [2020-10-13 14:57:09,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:57:09,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2020-10-13 14:57:09,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 794. [2020-10-13 14:57:09,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-10-13 14:57:09,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1137 transitions. [2020-10-13 14:57:09,709 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1137 transitions. Word has length 154 [2020-10-13 14:57:09,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:57:09,710 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 1137 transitions. [2020-10-13 14:57:09,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:57:09,711 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1137 transitions. [2020-10-13 14:57:09,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-13 14:57:09,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:57:09,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:57:09,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:57:09,715 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:57:09,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:57:09,715 INFO L82 PathProgramCache]: Analyzing trace with hash 548418846, now seen corresponding path program 1 times [2020-10-13 14:57:09,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:57:09,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331891096] [2020-10-13 14:57:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:57:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:09,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:09,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:09,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:10,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:10,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:10,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:10,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:10,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:10,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:11,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:12,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:14,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:14,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 14:57:14,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:57:14,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 14:57:14,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:14,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:57:14,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:57:14,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:57:14,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:57:15,224 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:57:15,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:57:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:15,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:15,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:15,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:57:15,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:57:15,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:57:15,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:15,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:57:15,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:57:15,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:57:15,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:57:15,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:57:15,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331891096] [2020-10-13 14:57:15,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:57:15,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:57:15,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636843396] [2020-10-13 14:57:15,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:57:15,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:57:15,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:57:15,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:57:15,333 INFO L87 Difference]: Start difference. First operand 794 states and 1137 transitions. Second operand 4 states. [2020-10-13 14:57:18,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:57:18,156 INFO L93 Difference]: Finished difference Result 2336 states and 3339 transitions. [2020-10-13 14:57:18,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:57:18,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-10-13 14:57:18,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:57:18,165 INFO L225 Difference]: With dead ends: 2336 [2020-10-13 14:57:18,166 INFO L226 Difference]: Without dead ends: 1574 [2020-10-13 14:57:18,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:57:18,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2020-10-13 14:57:18,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 796. [2020-10-13 14:57:18,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-10-13 14:57:18,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1139 transitions. [2020-10-13 14:57:18,229 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1139 transitions. Word has length 155 [2020-10-13 14:57:18,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:57:18,229 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 1139 transitions. [2020-10-13 14:57:18,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:57:18,229 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1139 transitions. [2020-10-13 14:57:18,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-13 14:57:18,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:57:18,232 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:57:18,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:57:18,233 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:57:18,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:57:18,233 INFO L82 PathProgramCache]: Analyzing trace with hash 669821109, now seen corresponding path program 1 times [2020-10-13 14:57:18,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:57:18,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685495506] [2020-10-13 14:57:18,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:57:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:18,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:18,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:18,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:18,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:18,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:18,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:18,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:18,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:19,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:19,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:20,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:23,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:23,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 14:57:23,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:57:23,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 14:57:23,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:23,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:57:23,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 14:57:23,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:57:23,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:57:23,641 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:57:23,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:57:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:23,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:23,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:23,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:57:23,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:57:23,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:57:23,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:23,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:57:23,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:57:23,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:57:23,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:57:23,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:57:23,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685495506] [2020-10-13 14:57:23,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:57:23,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:57:23,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678540837] [2020-10-13 14:57:23,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:57:23,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:57:23,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:57:23,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:57:23,718 INFO L87 Difference]: Start difference. First operand 796 states and 1139 transitions. Second operand 5 states. [2020-10-13 14:57:26,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:57:26,294 INFO L93 Difference]: Finished difference Result 1574 states and 2252 transitions. [2020-10-13 14:57:26,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:57:26,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-13 14:57:26,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:57:26,300 INFO L225 Difference]: With dead ends: 1574 [2020-10-13 14:57:26,300 INFO L226 Difference]: Without dead ends: 796 [2020-10-13 14:57:26,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:57:26,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2020-10-13 14:57:26,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 795. [2020-10-13 14:57:26,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-10-13 14:57:26,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1135 transitions. [2020-10-13 14:57:26,354 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1135 transitions. Word has length 156 [2020-10-13 14:57:26,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:57:26,355 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1135 transitions. [2020-10-13 14:57:26,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:57:26,355 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1135 transitions. [2020-10-13 14:57:26,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-13 14:57:26,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:57:26,358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:57:26,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:57:26,359 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:57:26,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:57:26,359 INFO L82 PathProgramCache]: Analyzing trace with hash -890407216, now seen corresponding path program 1 times [2020-10-13 14:57:26,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:57:26,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249395629] [2020-10-13 14:57:26,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:57:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:26,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:26,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:26,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:26,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:26,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:26,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:26,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:26,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:27,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:27,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:27,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:27,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:28,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:30,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:31,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:31,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 14:57:31,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:57:31,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 14:57:31,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:31,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:57:31,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:57:31,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 14:57:31,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:57:31,821 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:57:31,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:57:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:31,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:31,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:31,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:57:31,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:57:31,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:57:31,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:31,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:57:31,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:57:31,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:57:31,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:57:31,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:57:31,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249395629] [2020-10-13 14:57:31,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:57:31,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:57:31,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615006810] [2020-10-13 14:57:31,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:57:31,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:57:31,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:57:31,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:57:31,900 INFO L87 Difference]: Start difference. First operand 795 states and 1135 transitions. Second operand 5 states. [2020-10-13 14:57:34,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:57:34,460 INFO L93 Difference]: Finished difference Result 2289 states and 3253 transitions. [2020-10-13 14:57:34,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:57:34,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-13 14:57:34,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:57:34,469 INFO L225 Difference]: With dead ends: 2289 [2020-10-13 14:57:34,469 INFO L226 Difference]: Without dead ends: 1533 [2020-10-13 14:57:34,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:57:34,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2020-10-13 14:57:34,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1506. [2020-10-13 14:57:34,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1506 states. [2020-10-13 14:57:34,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2133 transitions. [2020-10-13 14:57:34,563 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2133 transitions. Word has length 156 [2020-10-13 14:57:34,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:57:34,564 INFO L479 AbstractCegarLoop]: Abstraction has 1506 states and 2133 transitions. [2020-10-13 14:57:34,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:57:34,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2133 transitions. [2020-10-13 14:57:34,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-13 14:57:34,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:57:34,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:57:34,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:57:34,569 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:57:34,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:57:34,570 INFO L82 PathProgramCache]: Analyzing trace with hash -493435981, now seen corresponding path program 1 times [2020-10-13 14:57:34,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:57:34,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428708288] [2020-10-13 14:57:34,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:57:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:34,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:34,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:34,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:34,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:34,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:34,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:35,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:35,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:35,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:35,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:35,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:36,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:38,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:39,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:39,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 14:57:39,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:57:39,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:57:39,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:57:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:57:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 14:57:39,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:57:39,956 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:57:39,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:57:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:39,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:39,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:39,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:57:39,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:57:39,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:57:39,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:39,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:57:39,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:57:39,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:57:39,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:57:40,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:57:40,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428708288] [2020-10-13 14:57:40,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:57:40,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:57:40,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404267218] [2020-10-13 14:57:40,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:57:40,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:57:40,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:57:40,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:57:40,029 INFO L87 Difference]: Start difference. First operand 1506 states and 2133 transitions. Second operand 5 states. [2020-10-13 14:57:42,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:57:42,200 INFO L93 Difference]: Finished difference Result 3689 states and 5198 transitions. [2020-10-13 14:57:42,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:57:42,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-13 14:57:42,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:57:42,212 INFO L225 Difference]: With dead ends: 3689 [2020-10-13 14:57:42,212 INFO L226 Difference]: Without dead ends: 2216 [2020-10-13 14:57:42,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:57:42,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2020-10-13 14:57:42,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 2193. [2020-10-13 14:57:42,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2020-10-13 14:57:42,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3057 transitions. [2020-10-13 14:57:42,350 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3057 transitions. Word has length 156 [2020-10-13 14:57:42,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:57:42,350 INFO L479 AbstractCegarLoop]: Abstraction has 2193 states and 3057 transitions. [2020-10-13 14:57:42,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:57:42,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3057 transitions. [2020-10-13 14:57:42,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 14:57:42,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:57:42,356 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:57:42,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:57:42,356 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:57:42,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:57:42,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1464845131, now seen corresponding path program 1 times [2020-10-13 14:57:42,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:57:42,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886096622] [2020-10-13 14:57:42,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:57:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:42,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:42,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:42,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:42,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:42,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:42,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:42,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:42,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:43,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:43,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:46,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:47,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:47,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 14:57:47,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:57:47,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:57:47,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:57:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 14:57:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 14:57:47,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:57:47,658 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:57:47,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:57:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:47,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:47,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:47,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:57:47,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:57:47,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:57:47,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:47,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:57:47,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:57:47,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:57:47,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:57:47,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:57:47,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886096622] [2020-10-13 14:57:47,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:57:47,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:57:47,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890765844] [2020-10-13 14:57:47,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:57:47,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:57:47,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:57:47,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:57:47,714 INFO L87 Difference]: Start difference. First operand 2193 states and 3057 transitions. Second operand 4 states. [2020-10-13 14:57:50,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:57:50,127 INFO L93 Difference]: Finished difference Result 4813 states and 6896 transitions. [2020-10-13 14:57:50,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:57:50,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-13 14:57:50,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:57:50,142 INFO L225 Difference]: With dead ends: 4813 [2020-10-13 14:57:50,143 INFO L226 Difference]: Without dead ends: 2946 [2020-10-13 14:57:50,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:57:50,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-10-13 14:57:50,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 2623. [2020-10-13 14:57:50,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2623 states. [2020-10-13 14:57:50,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 3749 transitions. [2020-10-13 14:57:50,294 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 3749 transitions. Word has length 160 [2020-10-13 14:57:50,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:57:50,295 INFO L479 AbstractCegarLoop]: Abstraction has 2623 states and 3749 transitions. [2020-10-13 14:57:50,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:57:50,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 3749 transitions. [2020-10-13 14:57:50,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-13 14:57:50,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:57:50,300 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:57:50,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:57:50,300 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:57:50,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:57:50,301 INFO L82 PathProgramCache]: Analyzing trace with hash -302645656, now seen corresponding path program 1 times [2020-10-13 14:57:50,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:57:50,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607520274] [2020-10-13 14:57:50,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:57:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:50,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:50,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:50,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:50,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:50,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:50,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:50,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:50,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:51,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:52,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:55,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:55,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:55,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:55,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:55,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:55,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 14:57:55,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:57:55,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:57:55,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:55,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:57:55,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:57:55,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 14:57:55,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:57:55,656 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:57:55,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:57:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:55,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:55,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:55,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:57:55,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:57:55,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:57:55,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:55,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:57:55,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:57:55,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:57:55,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:57:55,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:57:55,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607520274] [2020-10-13 14:57:55,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:57:55,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:57:55,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388327416] [2020-10-13 14:57:55,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:57:55,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:57:55,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:57:55,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:57:55,716 INFO L87 Difference]: Start difference. First operand 2623 states and 3749 transitions. Second operand 5 states. [2020-10-13 14:57:59,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:57:59,133 INFO L93 Difference]: Finished difference Result 7620 states and 10856 transitions. [2020-10-13 14:57:59,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:57:59,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-13 14:57:59,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:57:59,156 INFO L225 Difference]: With dead ends: 7620 [2020-10-13 14:57:59,156 INFO L226 Difference]: Without dead ends: 5069 [2020-10-13 14:57:59,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:57:59,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5069 states. [2020-10-13 14:57:59,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5069 to 5039. [2020-10-13 14:57:59,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5039 states. [2020-10-13 14:57:59,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5039 states to 5039 states and 7139 transitions. [2020-10-13 14:57:59,475 INFO L78 Accepts]: Start accepts. Automaton has 5039 states and 7139 transitions. Word has length 163 [2020-10-13 14:57:59,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:57:59,476 INFO L479 AbstractCegarLoop]: Abstraction has 5039 states and 7139 transitions. [2020-10-13 14:57:59,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:57:59,476 INFO L276 IsEmpty]: Start isEmpty. Operand 5039 states and 7139 transitions. [2020-10-13 14:57:59,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 14:57:59,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:57:59,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:57:59,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:57:59,484 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:57:59,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:57:59,485 INFO L82 PathProgramCache]: Analyzing trace with hash 795092954, now seen corresponding path program 1 times [2020-10-13 14:57:59,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:57:59,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747752573] [2020-10-13 14:57:59,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:57:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:59,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:59,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:59,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:59,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:59,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:59,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:59,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:59,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:00,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:00,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:00,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:00,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:01,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:02,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:02,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:03,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:04,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:04,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-13 14:58:04,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:58:04,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:58:04,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:58:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:58:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:58:04,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:04,764 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:58:04,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:58:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:04,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:04,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:04,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:58:04,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:58:04,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:58:04,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:04,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:58:04,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:58:04,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:58:04,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:04,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:58:04,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747752573] [2020-10-13 14:58:04,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:58:04,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:58:04,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911335560] [2020-10-13 14:58:04,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:58:04,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:58:04,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:58:04,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:58:04,804 INFO L87 Difference]: Start difference. First operand 5039 states and 7139 transitions. Second operand 4 states. [2020-10-13 14:58:08,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:58:08,477 INFO L93 Difference]: Finished difference Result 14978 states and 21209 transitions. [2020-10-13 14:58:08,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:58:08,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2020-10-13 14:58:08,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:58:08,519 INFO L225 Difference]: With dead ends: 14978 [2020-10-13 14:58:08,519 INFO L226 Difference]: Without dead ends: 10023 [2020-10-13 14:58:08,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:58:08,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10023 states. [2020-10-13 14:58:08,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10023 to 5047. [2020-10-13 14:58:08,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5047 states. [2020-10-13 14:58:08,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5047 states to 5047 states and 7147 transitions. [2020-10-13 14:58:08,966 INFO L78 Accepts]: Start accepts. Automaton has 5047 states and 7147 transitions. Word has length 164 [2020-10-13 14:58:08,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:58:08,966 INFO L479 AbstractCegarLoop]: Abstraction has 5047 states and 7147 transitions. [2020-10-13 14:58:08,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:58:08,967 INFO L276 IsEmpty]: Start isEmpty. Operand 5047 states and 7147 transitions. [2020-10-13 14:58:08,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-13 14:58:08,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:58:08,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:58:08,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:58:08,976 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:58:08,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:58:08,976 INFO L82 PathProgramCache]: Analyzing trace with hash -583362779, now seen corresponding path program 1 times [2020-10-13 14:58:08,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:58:08,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463061310] [2020-10-13 14:58:08,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:58:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:09,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:09,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:09,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:09,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:09,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:09,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:09,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:09,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:09,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:10,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:11,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:11,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:11,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:11,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:11,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:11,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:11,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:13,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:13,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:13,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:13,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:14,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:14,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 14:58:14,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-13 14:58:14,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:58:14,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:14,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:58:14,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:58:14,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 14:58:14,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:14,291 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:58:14,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:58:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:14,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:14,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:14,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:58:14,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:58:14,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:58:14,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:14,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:58:14,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:58:14,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:58:14,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:58:14,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463061310] [2020-10-13 14:58:14,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:58:14,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:58:14,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080350768] [2020-10-13 14:58:14,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:58:14,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:58:14,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:58:14,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:58:14,355 INFO L87 Difference]: Start difference. First operand 5047 states and 7147 transitions. Second operand 4 states. [2020-10-13 14:58:18,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:58:18,093 INFO L93 Difference]: Finished difference Result 13903 states and 19775 transitions. [2020-10-13 14:58:18,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:58:18,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2020-10-13 14:58:18,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:58:18,123 INFO L225 Difference]: With dead ends: 13903 [2020-10-13 14:58:18,123 INFO L226 Difference]: Without dead ends: 9763 [2020-10-13 14:58:18,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:58:18,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9763 states. [2020-10-13 14:58:18,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9763 to 9733. [2020-10-13 14:58:18,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9733 states. [2020-10-13 14:58:18,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9733 states to 9733 states and 13645 transitions. [2020-10-13 14:58:18,584 INFO L78 Accepts]: Start accepts. Automaton has 9733 states and 13645 transitions. Word has length 165 [2020-10-13 14:58:18,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:58:18,584 INFO L479 AbstractCegarLoop]: Abstraction has 9733 states and 13645 transitions. [2020-10-13 14:58:18,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:58:18,584 INFO L276 IsEmpty]: Start isEmpty. Operand 9733 states and 13645 transitions. [2020-10-13 14:58:18,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-13 14:58:18,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:58:18,598 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:58:18,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:58:18,598 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:58:18,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:58:18,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1586508520, now seen corresponding path program 1 times [2020-10-13 14:58:18,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:58:18,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249577817] [2020-10-13 14:58:18,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:58:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:18,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:18,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:18,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:18,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:18,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:18,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:18,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:18,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:19,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:19,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:19,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:20,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:21,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:21,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:21,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:21,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:23,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:23,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 14:58:23,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:58:23,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:58:23,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:23,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:58:23,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:58:23,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 14:58:23,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:23,955 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:58:23,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:58:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:23,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:23,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:23,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:58:23,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:58:23,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:58:23,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:23,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:58:23,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:58:23,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:58:23,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:23,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:58:23,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249577817] [2020-10-13 14:58:23,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:58:23,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:58:23,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183254411] [2020-10-13 14:58:23,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:58:23,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:58:23,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:58:23,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:58:23,996 INFO L87 Difference]: Start difference. First operand 9733 states and 13645 transitions. Second operand 5 states. [2020-10-13 14:58:26,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:58:26,919 INFO L93 Difference]: Finished difference Result 24614 states and 34407 transitions. [2020-10-13 14:58:26,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:58:26,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-13 14:58:26,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:58:26,959 INFO L225 Difference]: With dead ends: 24614 [2020-10-13 14:58:26,959 INFO L226 Difference]: Without dead ends: 15421 [2020-10-13 14:58:26,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:58:26,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15421 states. [2020-10-13 14:58:27,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15421 to 9801. [2020-10-13 14:58:27,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9801 states. [2020-10-13 14:58:27,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9801 states to 9801 states and 13730 transitions. [2020-10-13 14:58:27,542 INFO L78 Accepts]: Start accepts. Automaton has 9801 states and 13730 transitions. Word has length 165 [2020-10-13 14:58:27,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:58:27,542 INFO L479 AbstractCegarLoop]: Abstraction has 9801 states and 13730 transitions. [2020-10-13 14:58:27,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:58:27,542 INFO L276 IsEmpty]: Start isEmpty. Operand 9801 states and 13730 transitions. [2020-10-13 14:58:27,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-13 14:58:27,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:58:27,552 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:58:27,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:58:27,552 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:58:27,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:58:27,553 INFO L82 PathProgramCache]: Analyzing trace with hash -732298361, now seen corresponding path program 1 times [2020-10-13 14:58:27,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:58:27,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847502503] [2020-10-13 14:58:27,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:58:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:27,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:27,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:27,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:27,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:27,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:28,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:28,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:28,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:29,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:30,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:32,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:32,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 14:58:32,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:58:32,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:58:32,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:32,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:58:32,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 14:58:32,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 14:58:32,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:32,973 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:58:32,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:58:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:32,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:32,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:32,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:58:32,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:58:32,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:58:32,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:32,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:58:32,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:58:32,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:58:32,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:58:33,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847502503] [2020-10-13 14:58:33,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:58:33,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:58:33,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055087476] [2020-10-13 14:58:33,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:58:33,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:58:33,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:58:33,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:58:33,012 INFO L87 Difference]: Start difference. First operand 9801 states and 13730 transitions. Second operand 5 states. [2020-10-13 14:58:35,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:58:35,212 INFO L93 Difference]: Finished difference Result 19442 states and 27228 transitions. [2020-10-13 14:58:35,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:58:35,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-13 14:58:35,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:58:35,235 INFO L225 Difference]: With dead ends: 19442 [2020-10-13 14:58:35,235 INFO L226 Difference]: Without dead ends: 9767 [2020-10-13 14:58:35,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:58:35,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2020-10-13 14:58:35,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9755. [2020-10-13 14:58:35,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9755 states. [2020-10-13 14:58:35,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9755 states to 9755 states and 13650 transitions. [2020-10-13 14:58:35,795 INFO L78 Accepts]: Start accepts. Automaton has 9755 states and 13650 transitions. Word has length 165 [2020-10-13 14:58:35,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:58:35,795 INFO L479 AbstractCegarLoop]: Abstraction has 9755 states and 13650 transitions. [2020-10-13 14:58:35,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:58:35,795 INFO L276 IsEmpty]: Start isEmpty. Operand 9755 states and 13650 transitions. [2020-10-13 14:58:35,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 14:58:35,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:58:35,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:58:35,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:58:35,806 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:58:35,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:58:35,806 INFO L82 PathProgramCache]: Analyzing trace with hash 2093127690, now seen corresponding path program 1 times [2020-10-13 14:58:35,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:58:35,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422868771] [2020-10-13 14:58:35,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:58:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:35,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:35,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:35,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:35,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:36,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:36,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:36,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:36,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:40,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:40,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-13 14:58:40,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:58:40,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:58:40,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:40,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:58:40,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 14:58:40,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 14:58:40,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:41,120 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:58:41,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:58:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:41,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:41,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:41,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:58:41,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:58:41,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:58:41,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:41,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:58:41,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:58:41,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:58:41,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:41,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:58:41,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422868771] [2020-10-13 14:58:41,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:58:41,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:58:41,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329380721] [2020-10-13 14:58:41,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:58:41,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:58:41,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:58:41,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:58:41,158 INFO L87 Difference]: Start difference. First operand 9755 states and 13650 transitions. Second operand 5 states. [2020-10-13 14:58:43,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:58:43,318 INFO L93 Difference]: Finished difference Result 13971 states and 19548 transitions. [2020-10-13 14:58:43,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:58:43,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-13 14:58:43,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:58:43,339 INFO L225 Difference]: With dead ends: 13971 [2020-10-13 14:58:43,339 INFO L226 Difference]: Without dead ends: 9303 [2020-10-13 14:58:43,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:58:43,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9303 states. [2020-10-13 14:58:43,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9303 to 9297. [2020-10-13 14:58:43,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9297 states. [2020-10-13 14:58:43,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9297 states to 9297 states and 13087 transitions. [2020-10-13 14:58:43,888 INFO L78 Accepts]: Start accepts. Automaton has 9297 states and 13087 transitions. Word has length 167 [2020-10-13 14:58:43,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:58:43,889 INFO L479 AbstractCegarLoop]: Abstraction has 9297 states and 13087 transitions. [2020-10-13 14:58:43,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:58:43,889 INFO L276 IsEmpty]: Start isEmpty. Operand 9297 states and 13087 transitions. [2020-10-13 14:58:43,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 14:58:43,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:58:43,895 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:58:43,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:58:43,896 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:58:43,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:58:43,896 INFO L82 PathProgramCache]: Analyzing trace with hash -764663393, now seen corresponding path program 1 times [2020-10-13 14:58:43,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:58:43,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254194910] [2020-10-13 14:58:43,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:58:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:43,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:43,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:44,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:44,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:44,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:44,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:44,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:44,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:45,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:47,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:47,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:48,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:48,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-13 14:58:48,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:58:48,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 14:58:48,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:48,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:58:48,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 14:58:48,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 14:58:48,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:49,199 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:58:49,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:58:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:49,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:49,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:49,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:58:49,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:58:49,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:58:49,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:49,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:58:49,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:58:49,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:58:49,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:58:49,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254194910] [2020-10-13 14:58:49,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:58:49,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:58:49,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933513802] [2020-10-13 14:58:49,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:58:49,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:58:49,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:58:49,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:58:49,250 INFO L87 Difference]: Start difference. First operand 9297 states and 13087 transitions. Second operand 4 states. [2020-10-13 14:58:52,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:58:52,311 INFO L93 Difference]: Finished difference Result 21613 states and 31232 transitions. [2020-10-13 14:58:52,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:58:52,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-10-13 14:58:52,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:58:52,332 INFO L225 Difference]: With dead ends: 21613 [2020-10-13 14:58:52,332 INFO L226 Difference]: Without dead ends: 13403 [2020-10-13 14:58:52,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:58:52,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13403 states. [2020-10-13 14:58:53,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13403 to 12089. [2020-10-13 14:58:53,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12089 states. [2020-10-13 14:58:53,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12089 states to 12089 states and 17575 transitions. [2020-10-13 14:58:53,071 INFO L78 Accepts]: Start accepts. Automaton has 12089 states and 17575 transitions. Word has length 167 [2020-10-13 14:58:53,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:58:53,072 INFO L479 AbstractCegarLoop]: Abstraction has 12089 states and 17575 transitions. [2020-10-13 14:58:53,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:58:53,072 INFO L276 IsEmpty]: Start isEmpty. Operand 12089 states and 17575 transitions. [2020-10-13 14:58:53,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 14:58:53,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:58:53,078 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:58:53,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:58:53,078 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:58:53,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:58:53,079 INFO L82 PathProgramCache]: Analyzing trace with hash 461765764, now seen corresponding path program 1 times [2020-10-13 14:58:53,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:58:53,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801313205] [2020-10-13 14:58:53,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:58:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:53,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:53,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:53,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:53,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:53,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:53,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:53,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:53,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:53,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:55,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:57,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:57,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:57,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:57,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:57,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:58,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:58,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-13 14:58:58,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:58:58,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:58:58,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:58,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:58:58,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 14:58:58,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 14:58:58,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:58,409 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:58:58,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:58:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:58,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:58,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:58,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:58:58,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:58:58,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:58:58,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:58,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:58:58,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:58:58,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:58:58,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:58,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:58:58,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801313205] [2020-10-13 14:58:58,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:58:58,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:58:58,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534184627] [2020-10-13 14:58:58,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:58:58,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:58:58,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:58:58,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:58:58,455 INFO L87 Difference]: Start difference. First operand 12089 states and 17575 transitions. Second operand 5 states. [2020-10-13 14:59:00,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:59:00,543 INFO L93 Difference]: Finished difference Result 20653 states and 30202 transitions. [2020-10-13 14:59:00,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:59:00,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-13 14:59:00,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:59:00,557 INFO L225 Difference]: With dead ends: 20653 [2020-10-13 14:59:00,557 INFO L226 Difference]: Without dead ends: 9367 [2020-10-13 14:59:00,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:59:00,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9367 states. [2020-10-13 14:59:01,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9367 to 9353. [2020-10-13 14:59:01,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9353 states. [2020-10-13 14:59:01,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9353 states to 9353 states and 13538 transitions. [2020-10-13 14:59:01,091 INFO L78 Accepts]: Start accepts. Automaton has 9353 states and 13538 transitions. Word has length 167 [2020-10-13 14:59:01,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:59:01,091 INFO L479 AbstractCegarLoop]: Abstraction has 9353 states and 13538 transitions. [2020-10-13 14:59:01,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:59:01,091 INFO L276 IsEmpty]: Start isEmpty. Operand 9353 states and 13538 transitions. [2020-10-13 14:59:01,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-13 14:59:01,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:59:01,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:59:01,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:59:01,096 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:59:01,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:59:01,097 INFO L82 PathProgramCache]: Analyzing trace with hash -11355837, now seen corresponding path program 1 times [2020-10-13 14:59:01,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:59:01,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151863718] [2020-10-13 14:59:01,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:59:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:01,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:01,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:01,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:01,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:01,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:01,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:01,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:01,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:02,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:02,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:02,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:02,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:02,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:02,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:03,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:03,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:03,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:06,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:06,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-13 14:59:06,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:59:06,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:59:06,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:06,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:59:06,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 14:59:06,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 14:59:06,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:06,409 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:59:06,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:59:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:06,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:06,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:06,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:59:06,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:59:06,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:59:06,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:06,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:59:06,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:59:06,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:59:06,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:59:06,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151863718] [2020-10-13 14:59:06,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:59:06,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:59:06,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392057042] [2020-10-13 14:59:06,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:59:06,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:59:06,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:59:06,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:59:06,449 INFO L87 Difference]: Start difference. First operand 9353 states and 13538 transitions. Second operand 4 states. [2020-10-13 14:59:09,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:59:09,578 INFO L93 Difference]: Finished difference Result 22758 states and 33864 transitions. [2020-10-13 14:59:09,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:59:09,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2020-10-13 14:59:09,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:59:09,602 INFO L225 Difference]: With dead ends: 22758 [2020-10-13 14:59:09,603 INFO L226 Difference]: Without dead ends: 14569 [2020-10-13 14:59:09,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:59:09,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14569 states. [2020-10-13 14:59:10,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14569 to 13139. [2020-10-13 14:59:10,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13139 states. [2020-10-13 14:59:10,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13139 states to 13139 states and 19567 transitions. [2020-10-13 14:59:10,353 INFO L78 Accepts]: Start accepts. Automaton has 13139 states and 19567 transitions. Word has length 169 [2020-10-13 14:59:10,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:59:10,354 INFO L479 AbstractCegarLoop]: Abstraction has 13139 states and 19567 transitions. [2020-10-13 14:59:10,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:59:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 13139 states and 19567 transitions. [2020-10-13 14:59:10,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 14:59:10,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:59:10,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:59:10,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:59:10,359 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:59:10,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:59:10,359 INFO L82 PathProgramCache]: Analyzing trace with hash 883859039, now seen corresponding path program 1 times [2020-10-13 14:59:10,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:59:10,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427111306] [2020-10-13 14:59:10,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:59:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:10,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:10,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:10,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:10,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:10,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:10,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:10,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:11,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:11,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:11,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:11,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:13,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:14,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:14,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:15,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:15,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 14:59:15,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:59:15,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:59:15,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:59:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-13 14:59:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 14:59:15,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:15,682 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:59:15,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:59:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:15,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:15,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:15,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:59:15,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:59:15,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:59:15,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:15,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:59:15,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:59:15,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:59:15,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:59:15,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427111306] [2020-10-13 14:59:15,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:59:15,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:59:15,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64865072] [2020-10-13 14:59:15,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:59:15,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:59:15,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:59:15,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:59:15,718 INFO L87 Difference]: Start difference. First operand 13139 states and 19567 transitions. Second operand 5 states. [2020-10-13 14:59:19,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:59:19,983 INFO L93 Difference]: Finished difference Result 35858 states and 54490 transitions. [2020-10-13 14:59:19,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:59:19,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-13 14:59:19,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:59:20,010 INFO L225 Difference]: With dead ends: 35858 [2020-10-13 14:59:20,010 INFO L226 Difference]: Without dead ends: 24833 [2020-10-13 14:59:20,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:59:20,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24833 states. [2020-10-13 14:59:20,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24833 to 13736. [2020-10-13 14:59:20,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13736 states. [2020-10-13 14:59:20,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13736 states to 13736 states and 20272 transitions. [2020-10-13 14:59:20,908 INFO L78 Accepts]: Start accepts. Automaton has 13736 states and 20272 transitions. Word has length 170 [2020-10-13 14:59:20,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:59:20,908 INFO L479 AbstractCegarLoop]: Abstraction has 13736 states and 20272 transitions. [2020-10-13 14:59:20,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:59:20,908 INFO L276 IsEmpty]: Start isEmpty. Operand 13736 states and 20272 transitions. [2020-10-13 14:59:20,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 14:59:20,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:59:20,914 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:59:20,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:59:20,914 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:59:20,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:59:20,915 INFO L82 PathProgramCache]: Analyzing trace with hash 827800168, now seen corresponding path program 1 times [2020-10-13 14:59:20,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:59:20,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046342618] [2020-10-13 14:59:20,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:59:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:20,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:20,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:21,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:21,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:21,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:21,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:21,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:21,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:21,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:22,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:22,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:24,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:24,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:24,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:25,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:25,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 14:59:25,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:59:25,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:59:25,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:25,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:59:25,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:59:25,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 14:59:25,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:26,233 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:59:26,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:59:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:26,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:26,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:26,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:59:26,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:59:26,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:59:26,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:26,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:59:26,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:59:26,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:59:26,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:26,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:59:26,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046342618] [2020-10-13 14:59:26,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:59:26,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:59:26,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878684997] [2020-10-13 14:59:26,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:59:26,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:59:26,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:59:26,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:59:26,278 INFO L87 Difference]: Start difference. First operand 13736 states and 20272 transitions. Second operand 5 states. [2020-10-13 14:59:30,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:59:30,534 INFO L93 Difference]: Finished difference Result 32493 states and 48136 transitions. [2020-10-13 14:59:30,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:59:30,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-13 14:59:30,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:59:30,558 INFO L225 Difference]: With dead ends: 32493 [2020-10-13 14:59:30,558 INFO L226 Difference]: Without dead ends: 19310 [2020-10-13 14:59:30,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:59:30,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19310 states. [2020-10-13 14:59:31,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19310 to 19289. [2020-10-13 14:59:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19289 states. [2020-10-13 14:59:31,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19289 states to 19289 states and 28141 transitions. [2020-10-13 14:59:31,692 INFO L78 Accepts]: Start accepts. Automaton has 19289 states and 28141 transitions. Word has length 170 [2020-10-13 14:59:31,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:59:31,693 INFO L479 AbstractCegarLoop]: Abstraction has 19289 states and 28141 transitions. [2020-10-13 14:59:31,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:59:31,693 INFO L276 IsEmpty]: Start isEmpty. Operand 19289 states and 28141 transitions. [2020-10-13 14:59:31,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 14:59:31,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:59:31,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:59:31,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:59:31,700 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:59:31,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:59:31,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1769543933, now seen corresponding path program 1 times [2020-10-13 14:59:31,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:59:31,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395946653] [2020-10-13 14:59:31,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:59:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:31,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:31,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:31,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:31,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:31,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:31,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:32,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:32,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:33,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:33,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:33,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:34,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:34,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:35,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:35,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 14:59:35,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:59:35,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4168 [2020-10-13 14:59:35,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:35,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:59:35,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 14:59:35,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 14:59:35,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:36,166 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:59:36,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:59:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:36,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:36,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:36,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:59:36,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:59:36,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:59:36,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:36,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:59:36,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:59:36,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:59:36,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:59:36,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395946653] [2020-10-13 14:59:36,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:59:36,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:59:36,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043784349] [2020-10-13 14:59:36,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:59:36,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:59:36,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:59:36,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:59:36,212 INFO L87 Difference]: Start difference. First operand 19289 states and 28141 transitions. Second operand 4 states. [2020-10-13 14:59:40,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:59:40,579 INFO L93 Difference]: Finished difference Result 24453 states and 35511 transitions. [2020-10-13 14:59:40,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:59:40,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2020-10-13 14:59:40,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:59:40,597 INFO L225 Difference]: With dead ends: 24453 [2020-10-13 14:59:40,597 INFO L226 Difference]: Without dead ends: 15559 [2020-10-13 14:59:40,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:59:40,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15559 states. [2020-10-13 14:59:41,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15559 to 15520. [2020-10-13 14:59:41,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15520 states. [2020-10-13 14:59:41,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15520 states to 15520 states and 22265 transitions. [2020-10-13 14:59:41,536 INFO L78 Accepts]: Start accepts. Automaton has 15520 states and 22265 transitions. Word has length 172 [2020-10-13 14:59:41,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:59:41,536 INFO L479 AbstractCegarLoop]: Abstraction has 15520 states and 22265 transitions. [2020-10-13 14:59:41,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:59:41,536 INFO L276 IsEmpty]: Start isEmpty. Operand 15520 states and 22265 transitions. [2020-10-13 14:59:41,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 14:59:41,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:59:41,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:59:41,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:59:41,543 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:59:41,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:59:41,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1028485317, now seen corresponding path program 1 times [2020-10-13 14:59:41,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:59:41,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312777605] [2020-10-13 14:59:41,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:59:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:41,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:41,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:41,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:41,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:41,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:41,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:41,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:42,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:42,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:42,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:43,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:46,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:46,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 14:59:46,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:59:46,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 14:59:46,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:46,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:59:46,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 14:59:46,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 14:59:46,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:46,907 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:59:46,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:59:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:46,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:46,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:46,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:59:46,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:59:46,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:59:46,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:46,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:59:46,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:59:46,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:59:46,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:46,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:59:46,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312777605] [2020-10-13 14:59:46,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:59:46,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:59:46,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065397221] [2020-10-13 14:59:46,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:59:46,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:59:46,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:59:46,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:59:46,970 INFO L87 Difference]: Start difference. First operand 15520 states and 22265 transitions. Second operand 4 states. [2020-10-13 14:59:51,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:59:51,111 INFO L93 Difference]: Finished difference Result 42891 states and 62486 transitions. [2020-10-13 14:59:51,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:59:51,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2020-10-13 14:59:51,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:59:51,146 INFO L225 Difference]: With dead ends: 42891 [2020-10-13 14:59:51,146 INFO L226 Difference]: Without dead ends: 29406 [2020-10-13 14:59:51,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:59:51,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29406 states. [2020-10-13 14:59:52,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29406 to 29371. [2020-10-13 14:59:52,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29371 states. [2020-10-13 14:59:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29371 states to 29371 states and 42377 transitions. [2020-10-13 14:59:52,995 INFO L78 Accepts]: Start accepts. Automaton has 29371 states and 42377 transitions. Word has length 177 [2020-10-13 14:59:52,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:59:52,995 INFO L479 AbstractCegarLoop]: Abstraction has 29371 states and 42377 transitions. [2020-10-13 14:59:52,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:59:52,995 INFO L276 IsEmpty]: Start isEmpty. Operand 29371 states and 42377 transitions. [2020-10-13 14:59:53,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 14:59:53,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:59:53,006 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:59:53,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:59:53,006 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:59:53,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:59:53,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1757657248, now seen corresponding path program 1 times [2020-10-13 14:59:53,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:59:53,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919341323] [2020-10-13 14:59:53,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:59:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:53,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:53,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:53,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:53,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:53,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:53,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:53,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:53,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:54,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:54,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:54,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:54,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:55,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:58,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:58,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 14:59:58,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:59:58,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-13 14:59:58,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:58,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:59:58,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 14:59:58,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 14:59:58,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:58,433 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:59:58,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:59:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:58,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:58,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:58,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:59:58,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:59:58,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:59:58,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:58,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:59:58,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:59:58,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:59:58,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:59:58,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919341323] [2020-10-13 14:59:58,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:59:58,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:59:58,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800624162] [2020-10-13 14:59:58,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:59:58,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:59:58,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:59:58,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:59:58,470 INFO L87 Difference]: Start difference. First operand 29371 states and 42377 transitions. Second operand 5 states. [2020-10-13 15:00:04,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:00:04,974 INFO L93 Difference]: Finished difference Result 79272 states and 116613 transitions. [2020-10-13 15:00:04,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:00:04,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-13 15:00:04,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:00:05,065 INFO L225 Difference]: With dead ends: 79272 [2020-10-13 15:00:05,065 INFO L226 Difference]: Without dead ends: 55489 [2020-10-13 15:00:05,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:00:05,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55489 states. [2020-10-13 15:00:08,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55489 to 31538. [2020-10-13 15:00:08,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31538 states. [2020-10-13 15:00:08,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31538 states to 31538 states and 44867 transitions. [2020-10-13 15:00:08,846 INFO L78 Accepts]: Start accepts. Automaton has 31538 states and 44867 transitions. Word has length 177 [2020-10-13 15:00:08,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:00:08,846 INFO L479 AbstractCegarLoop]: Abstraction has 31538 states and 44867 transitions. [2020-10-13 15:00:08,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:00:08,847 INFO L276 IsEmpty]: Start isEmpty. Operand 31538 states and 44867 transitions. [2020-10-13 15:00:08,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 15:00:08,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:08,856 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:00:08,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:00:08,856 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:08,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:08,857 INFO L82 PathProgramCache]: Analyzing trace with hash 49780844, now seen corresponding path program 1 times [2020-10-13 15:00:08,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:08,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859507134] [2020-10-13 15:00:08,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:08,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:08,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:08,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:08,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:09,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:09,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:09,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:09,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:10,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:10,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:12,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:13,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:13,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 15:00:13,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:00:13,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 15:00:13,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:13,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:00:13,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 15:00:13,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 15:00:13,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:14,207 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:00:14,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:00:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:14,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:14,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:14,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:00:14,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:00:14,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:00:14,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:14,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:00:14,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:00:14,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 15:00:14,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:14,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:00:14,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859507134] [2020-10-13 15:00:14,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:00:14,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:00:14,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016260134] [2020-10-13 15:00:14,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:00:14,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:00:14,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:00:14,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:00:14,264 INFO L87 Difference]: Start difference. First operand 31538 states and 44867 transitions. Second operand 6 states. [2020-10-13 15:00:14,568 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-13 15:00:19,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:00:19,860 INFO L93 Difference]: Finished difference Result 68387 states and 100154 transitions. [2020-10-13 15:00:19,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:00:19,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2020-10-13 15:00:19,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:00:19,909 INFO L225 Difference]: With dead ends: 68387 [2020-10-13 15:00:19,909 INFO L226 Difference]: Without dead ends: 39790 [2020-10-13 15:00:19,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:00:19,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39790 states. [2020-10-13 15:00:23,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39790 to 39759. [2020-10-13 15:00:23,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39759 states. [2020-10-13 15:00:23,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39759 states to 39759 states and 58381 transitions. [2020-10-13 15:00:23,073 INFO L78 Accepts]: Start accepts. Automaton has 39759 states and 58381 transitions. Word has length 177 [2020-10-13 15:00:23,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:00:23,074 INFO L479 AbstractCegarLoop]: Abstraction has 39759 states and 58381 transitions. [2020-10-13 15:00:23,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:00:23,074 INFO L276 IsEmpty]: Start isEmpty. Operand 39759 states and 58381 transitions. [2020-10-13 15:00:23,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 15:00:23,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:23,081 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:00:23,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:00:23,082 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:23,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:23,082 INFO L82 PathProgramCache]: Analyzing trace with hash -916890068, now seen corresponding path program 1 times [2020-10-13 15:00:23,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:23,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190351967] [2020-10-13 15:00:23,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:23,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:23,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:23,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:23,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:23,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:23,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:23,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:24,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:24,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:27,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:27,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:27,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:27,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:28,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:28,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 15:00:28,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 15:00:28,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:00:28,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:28,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:00:28,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:00:28,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 15:00:28,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:28,458 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:00:28,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:00:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:28,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:28,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:28,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:00:28,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:00:28,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:00:28,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:28,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:00:28,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:00:28,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:00:28,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:00:28,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190351967] [2020-10-13 15:00:28,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:00:28,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:00:28,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571706933] [2020-10-13 15:00:28,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:00:28,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:00:28,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:00:28,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:00:28,542 INFO L87 Difference]: Start difference. First operand 39759 states and 58381 transitions. Second operand 5 states.