/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:05:55,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:05:55,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:05:55,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:05:55,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:05:55,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:05:55,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:05:55,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:05:55,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:05:55,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:05:55,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:05:55,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:05:55,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:05:55,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:05:55,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:05:55,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:05:55,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:05:55,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:05:55,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:05:55,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:05:55,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:05:55,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:05:55,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:05:55,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:05:55,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:05:55,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:05:55,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:05:55,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:05:55,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:05:55,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:05:55,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:05:55,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:05:55,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:05:55,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:05:55,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:05:55,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:05:55,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:05:55,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:05:55,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:05:55,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:05:55,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:05:55,171 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 [2020-10-14 09:05:55,193 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:05:55,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:05:55,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:05:55,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:05:55,195 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:05:55,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:05:55,195 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:05:55,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:05:55,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:05:55,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:05:55,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:05:55,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:05:55,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:05:55,197 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:05:55,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:05:55,197 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:05:55,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:05:55,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:05:55,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:05:55,198 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:05:55,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:05:55,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:05:55,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:05:55,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:05:55,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:05:55,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:05:55,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:05:55,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:05:55,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:05:55,200 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:05:55,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:05:55,507 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:05:55,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:05:55,512 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:05:55,512 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:05:55,513 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-14 09:05:55,575 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f744b3c2/0b2179715dc14677bf2e7a500180d456/FLAG5ced5b841 [2020-10-14 09:05:56,217 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:05:56,218 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-14 09:05:56,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f744b3c2/0b2179715dc14677bf2e7a500180d456/FLAG5ced5b841 [2020-10-14 09:05:56,402 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f744b3c2/0b2179715dc14677bf2e7a500180d456 [2020-10-14 09:05:56,411 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:05:56,413 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:05:56,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:05:56,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:05:56,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:05:56,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:05:56" (1/1) ... [2020-10-14 09:05:56,422 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 14.10 09:05:56, skipping insertion in model container [2020-10-14 09:05:56,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:05:56" (1/1) ... [2020-10-14 09:05:56,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:05:56,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:05:57,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:05:57,306 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:05:57,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:05:57,687 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:05:57,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:57 WrapperNode [2020-10-14 09:05:57,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:05:57,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:05:57,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:05:57,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:05:57,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:57" (1/1) ... [2020-10-14 09:05:57,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:57" (1/1) ... [2020-10-14 09:05:57,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:57" (1/1) ... [2020-10-14 09:05:57,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:57" (1/1) ... [2020-10-14 09:05:57,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:57" (1/1) ... [2020-10-14 09:05:57,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:57" (1/1) ... [2020-10-14 09:05:57,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:57" (1/1) ... [2020-10-14 09:05:57,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:05:57,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:05:57,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:05:57,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:05:57,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:57" (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 [2020-10-14 09:05:57,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:05:57,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:05:57,984 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:05:57,984 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:05:57,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:05:57,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:05:57,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:05:57,986 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:05:57,986 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:05:57,986 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:05:57,987 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:05:57,987 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:05:57,987 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:05:57,987 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:05:57,987 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:05:57,988 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:05:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:05:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:05:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:05:57,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:05:59,808 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:05:59,808 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:05:59,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:05:59 BoogieIcfgContainer [2020-10-14 09:05:59,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:05:59,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:05:59,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:05:59,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:05:59,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:05:56" (1/3) ... [2020-10-14 09:05:59,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f15625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:05:59, skipping insertion in model container [2020-10-14 09:05:59,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:57" (2/3) ... [2020-10-14 09:05:59,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f15625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:05:59, skipping insertion in model container [2020-10-14 09:05:59,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:05:59" (3/3) ... [2020-10-14 09:05:59,825 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-14 09:05:59,836 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:05:59,845 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-14 09:05:59,860 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-14 09:05:59,888 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:05:59,889 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:05:59,889 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:05:59,889 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:05:59,889 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:05:59,889 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:05:59,890 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:05:59,890 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:05:59,917 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states. [2020-10-14 09:05:59,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 09:05:59,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:59,935 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] [2020-10-14 09:05:59,935 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:59,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:59,942 INFO L82 PathProgramCache]: Analyzing trace with hash -327179082, now seen corresponding path program 1 times [2020-10-14 09:05:59,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:59,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74857369] [2020-10-14 09:05:59,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:00,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:00,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:00,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:01,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:01,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:02,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:02,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:02,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:05,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:05,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 09:06:05,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:06:05,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:06:05,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:05,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:06:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 09:06:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 09:06:05,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 09:06:05,986 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:06:05,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:06,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:06,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:06,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:06,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:06,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:06:06,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:06,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:06:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:06:06,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:06:06,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:06:06,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74857369] [2020-10-14 09:06:06,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:06,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:06:06,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463560731] [2020-10-14 09:06:06,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:06:06,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:06,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:06:06,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:06:06,063 INFO L87 Difference]: Start difference. First operand 462 states. Second operand 4 states. [2020-10-14 09:06:06,575 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-14 09:06:10,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:10,035 INFO L93 Difference]: Finished difference Result 732 states and 1278 transitions. [2020-10-14 09:06:10,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:06:10,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-14 09:06:10,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:10,060 INFO L225 Difference]: With dead ends: 732 [2020-10-14 09:06:10,061 INFO L226 Difference]: Without dead ends: 575 [2020-10-14 09:06:10,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:06:10,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-10-14 09:06:10,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 569. [2020-10-14 09:06:10,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-10-14 09:06:10,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 758 transitions. [2020-10-14 09:06:10,156 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 758 transitions. Word has length 55 [2020-10-14 09:06:10,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:10,157 INFO L479 AbstractCegarLoop]: Abstraction has 569 states and 758 transitions. [2020-10-14 09:06:10,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:06:10,157 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 758 transitions. [2020-10-14 09:06:10,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 09:06:10,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:10,162 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] [2020-10-14 09:06:10,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:06:10,163 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:10,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:10,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1869485033, now seen corresponding path program 1 times [2020-10-14 09:06:10,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:10,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566462122] [2020-10-14 09:06:10,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:10,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:10,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:10,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:10,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:11,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:12,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:13,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:13,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:13,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:15,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:15,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 09:06:15,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:06:15,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 09:06:15,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:15,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:15,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:06:15,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 09:06:15,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 09:06:15,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 09:06:15,691 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:06:15,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:15,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:15,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:15,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:15,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:15,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 09:06:15,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:15,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:06:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:15,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:06:15,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:06:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:06:15,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566462122] [2020-10-14 09:06:15,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:15,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:06:15,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063369082] [2020-10-14 09:06:15,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:06:15,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:15,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:06:15,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:06:15,748 INFO L87 Difference]: Start difference. First operand 569 states and 758 transitions. Second operand 4 states. [2020-10-14 09:06:16,214 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-14 09:06:18,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:18,604 INFO L93 Difference]: Finished difference Result 998 states and 1383 transitions. [2020-10-14 09:06:18,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:06:18,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-14 09:06:18,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:18,611 INFO L225 Difference]: With dead ends: 998 [2020-10-14 09:06:18,612 INFO L226 Difference]: Without dead ends: 785 [2020-10-14 09:06:18,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:06:18,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-10-14 09:06:18,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 778. [2020-10-14 09:06:18,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2020-10-14 09:06:18,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1060 transitions. [2020-10-14 09:06:18,662 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1060 transitions. Word has length 55 [2020-10-14 09:06:18,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:18,662 INFO L479 AbstractCegarLoop]: Abstraction has 778 states and 1060 transitions. [2020-10-14 09:06:18,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:06:18,663 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1060 transitions. [2020-10-14 09:06:18,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 09:06:18,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:18,666 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] [2020-10-14 09:06:18,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:06:18,666 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:18,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:18,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1763444102, now seen corresponding path program 1 times [2020-10-14 09:06:18,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:18,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665511027] [2020-10-14 09:06:18,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:18,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:18,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:18,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:19,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:19,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:19,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:20,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:20,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:20,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:20,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:22,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:22,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:23,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:23,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 09:06:23,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:06:23,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 09:06:23,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:23,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 09:06:23,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:06:23,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 09:06:23,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:06:24,304 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:06:24,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:24,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:24,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:24,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:24,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:24,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 09:06:24,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:24,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:24,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:06:24,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:24,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:06:24,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:06:24,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:06:24,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665511027] [2020-10-14 09:06:24,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:24,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:06:24,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910874686] [2020-10-14 09:06:24,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 09:06:24,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:24,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 09:06:24,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 09:06:24,385 INFO L87 Difference]: Start difference. First operand 778 states and 1060 transitions. Second operand 7 states. [2020-10-14 09:06:24,844 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2020-10-14 09:06:27,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:27,958 INFO L93 Difference]: Finished difference Result 2027 states and 2896 transitions. [2020-10-14 09:06:27,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 09:06:27,959 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-10-14 09:06:27,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:27,969 INFO L225 Difference]: With dead ends: 2027 [2020-10-14 09:06:27,969 INFO L226 Difference]: Without dead ends: 1563 [2020-10-14 09:06:27,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-14 09:06:27,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2020-10-14 09:06:28,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 794. [2020-10-14 09:06:28,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-10-14 09:06:28,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1072 transitions. [2020-10-14 09:06:28,071 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1072 transitions. Word has length 55 [2020-10-14 09:06:28,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:28,075 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 1072 transitions. [2020-10-14 09:06:28,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 09:06:28,075 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1072 transitions. [2020-10-14 09:06:28,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 09:06:28,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:28,082 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] [2020-10-14 09:06:28,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:06:28,083 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:28,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:28,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1139237164, now seen corresponding path program 1 times [2020-10-14 09:06:28,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:28,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21864800] [2020-10-14 09:06:28,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:28,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:28,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:28,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:28,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:28,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:29,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:29,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:31,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:31,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:32,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:32,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:32,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:32,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:32,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:33,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:33,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:33,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 09:06:33,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:06:33,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 09:06:33,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:33,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:06:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:06:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 09:06:33,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:06:33,743 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:06:33,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:33,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:33,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:33,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:33,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:33,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 09:06:33,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:33,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:33,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:06:33,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:33,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:06:33,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:06:33,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:06:33,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21864800] [2020-10-14 09:06:33,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:33,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:06:33,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893746947] [2020-10-14 09:06:33,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:06:33,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:33,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:06:33,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:06:33,827 INFO L87 Difference]: Start difference. First operand 794 states and 1072 transitions. Second operand 6 states. [2020-10-14 09:06:34,288 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-14 09:06:36,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:36,439 INFO L93 Difference]: Finished difference Result 1593 states and 2211 transitions. [2020-10-14 09:06:36,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:06:36,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-14 09:06:36,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:36,448 INFO L225 Difference]: With dead ends: 1593 [2020-10-14 09:06:36,448 INFO L226 Difference]: Without dead ends: 1079 [2020-10-14 09:06:36,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:06:36,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2020-10-14 09:06:36,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1069. [2020-10-14 09:06:36,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1069 states. [2020-10-14 09:06:36,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1471 transitions. [2020-10-14 09:06:36,517 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1471 transitions. Word has length 55 [2020-10-14 09:06:36,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:36,517 INFO L479 AbstractCegarLoop]: Abstraction has 1069 states and 1471 transitions. [2020-10-14 09:06:36,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:06:36,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1471 transitions. [2020-10-14 09:06:36,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 09:06:36,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:36,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:06:36,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:06:36,521 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:36,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:36,522 INFO L82 PathProgramCache]: Analyzing trace with hash -301381471, now seen corresponding path program 1 times [2020-10-14 09:06:36,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:36,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143542445] [2020-10-14 09:06:36,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:36,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:36,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:36,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:37,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:37,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:37,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:37,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:40,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:40,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:40,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:41,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:41,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:41,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:41,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:41,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:41,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 09:06:41,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 09:06:41,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:06:41,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:41,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:41,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:06:41,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:06:41,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 09:06:41,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:06:42,070 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:06:42,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:42,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:42,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:42,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:42,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:42,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:06:42,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:42,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:42,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:06:42,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:42,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:06:42,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:06:42,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:06:42,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143542445] [2020-10-14 09:06:42,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:42,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:06:42,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372012079] [2020-10-14 09:06:42,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:06:42,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:42,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:06:42,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:06:42,116 INFO L87 Difference]: Start difference. First operand 1069 states and 1471 transitions. Second operand 6 states. [2020-10-14 09:06:42,638 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-10-14 09:06:46,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:46,633 INFO L93 Difference]: Finished difference Result 6298 states and 9091 transitions. [2020-10-14 09:06:46,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:06:46,635 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-14 09:06:46,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:46,664 INFO L225 Difference]: With dead ends: 6298 [2020-10-14 09:06:46,664 INFO L226 Difference]: Without dead ends: 5335 [2020-10-14 09:06:46,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:06:46,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5335 states. [2020-10-14 09:06:46,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5335 to 3007. [2020-10-14 09:06:46,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3007 states. [2020-10-14 09:06:46,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4266 transitions. [2020-10-14 09:06:46,896 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4266 transitions. Word has length 56 [2020-10-14 09:06:46,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:46,897 INFO L479 AbstractCegarLoop]: Abstraction has 3007 states and 4266 transitions. [2020-10-14 09:06:46,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:06:46,897 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4266 transitions. [2020-10-14 09:06:46,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 09:06:46,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:46,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:06:46,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:06:46,903 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:46,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:46,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1921455489, now seen corresponding path program 1 times [2020-10-14 09:06:46,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:46,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699874208] [2020-10-14 09:06:46,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:46,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:47,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:47,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:47,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:47,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:47,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:47,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:47,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:48,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:48,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:51,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:51,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 09:06:51,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:06:51,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:06:51,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:51,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:51,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 09:06:51,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:06:51,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 09:06:51,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:52,593 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:06:52,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:52,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:52,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:52,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:52,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:52,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 09:06:52,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:52,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:52,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:06:52,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:52,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:06:52,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:06:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:06:52,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699874208] [2020-10-14 09:06:52,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:52,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 09:06:52,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606024256] [2020-10-14 09:06:52,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 09:06:52,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:52,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 09:06:52,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 09:06:52,661 INFO L87 Difference]: Start difference. First operand 3007 states and 4266 transitions. Second operand 7 states. [2020-10-14 09:06:53,423 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 287 [2020-10-14 09:06:56,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:56,495 INFO L93 Difference]: Finished difference Result 7571 states and 10953 transitions. [2020-10-14 09:06:56,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 09:06:56,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-10-14 09:06:56,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:56,519 INFO L225 Difference]: With dead ends: 7571 [2020-10-14 09:06:56,519 INFO L226 Difference]: Without dead ends: 5667 [2020-10-14 09:06:56,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:06:56,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5667 states. [2020-10-14 09:06:56,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5667 to 3007. [2020-10-14 09:06:56,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3007 states. [2020-10-14 09:06:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4262 transitions. [2020-10-14 09:06:56,739 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4262 transitions. Word has length 56 [2020-10-14 09:06:56,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:56,739 INFO L479 AbstractCegarLoop]: Abstraction has 3007 states and 4262 transitions. [2020-10-14 09:06:56,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 09:06:56,740 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4262 transitions. [2020-10-14 09:06:56,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 09:06:56,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:56,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:06:56,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:06:56,743 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:56,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:56,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1206959956, now seen corresponding path program 1 times [2020-10-14 09:06:56,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:56,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652190831] [2020-10-14 09:06:56,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:56,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:56,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:56,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:56,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:57,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:57,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:58,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:58,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:58,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:58,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:58,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:59,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:59,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:01,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:01,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 09:07:01,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:07:01,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:07:01,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:01,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:01,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:07:01,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 09:07:01,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 09:07:01,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:02,310 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:07:02,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:02,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:02,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:02,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:02,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:02,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 09:07:02,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:02,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:02,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:07:02,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:02,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:07:02,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:07:02,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:02,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652190831] [2020-10-14 09:07:02,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:02,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:07:02,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951273745] [2020-10-14 09:07:02,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:07:02,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:02,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:07:02,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:07:02,367 INFO L87 Difference]: Start difference. First operand 3007 states and 4262 transitions. Second operand 4 states. [2020-10-14 09:07:04,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:04,516 INFO L93 Difference]: Finished difference Result 5963 states and 8575 transitions. [2020-10-14 09:07:04,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:07:04,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-14 09:07:04,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:04,531 INFO L225 Difference]: With dead ends: 5963 [2020-10-14 09:07:04,532 INFO L226 Difference]: Without dead ends: 3801 [2020-10-14 09:07:04,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:07:04,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3801 states. [2020-10-14 09:07:04,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3801 to 3795. [2020-10-14 09:07:04,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3795 states. [2020-10-14 09:07:04,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3795 states to 3795 states and 5265 transitions. [2020-10-14 09:07:04,812 INFO L78 Accepts]: Start accepts. Automaton has 3795 states and 5265 transitions. Word has length 57 [2020-10-14 09:07:04,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:04,816 INFO L479 AbstractCegarLoop]: Abstraction has 3795 states and 5265 transitions. [2020-10-14 09:07:04,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:07:04,816 INFO L276 IsEmpty]: Start isEmpty. Operand 3795 states and 5265 transitions. [2020-10-14 09:07:04,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 09:07:04,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:04,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:07:04,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:07:04,822 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:04,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:04,822 INFO L82 PathProgramCache]: Analyzing trace with hash -2073782866, now seen corresponding path program 1 times [2020-10-14 09:07:04,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:04,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064096361] [2020-10-14 09:07:04,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:04,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:04,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:04,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:05,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:05,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:07,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:07,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:08,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:08,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:08,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:08,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:09,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:09,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:09,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:09,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:09,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:09,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:09,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 09:07:09,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:07:09,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:07:09,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:09,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:07:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 09:07:09,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 09:07:09,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:10,262 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:07:10,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:10,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:10,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:10,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:10,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:10,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:07:10,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:10,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:07:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:10,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:07:10,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:10,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:10,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064096361] [2020-10-14 09:07:10,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:10,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:07:10,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644517666] [2020-10-14 09:07:10,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:07:10,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:10,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:07:10,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:07:10,298 INFO L87 Difference]: Start difference. First operand 3795 states and 5265 transitions. Second operand 4 states. [2020-10-14 09:07:10,746 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-14 09:07:13,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:13,020 INFO L93 Difference]: Finished difference Result 5832 states and 8147 transitions. [2020-10-14 09:07:13,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:07:13,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-14 09:07:13,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:13,034 INFO L225 Difference]: With dead ends: 5832 [2020-10-14 09:07:13,034 INFO L226 Difference]: Without dead ends: 3801 [2020-10-14 09:07:13,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:07:13,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3801 states. [2020-10-14 09:07:13,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3801 to 3783. [2020-10-14 09:07:13,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3783 states. [2020-10-14 09:07:13,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3783 states to 3783 states and 5193 transitions. [2020-10-14 09:07:13,279 INFO L78 Accepts]: Start accepts. Automaton has 3783 states and 5193 transitions. Word has length 57 [2020-10-14 09:07:13,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:13,279 INFO L479 AbstractCegarLoop]: Abstraction has 3783 states and 5193 transitions. [2020-10-14 09:07:13,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:07:13,279 INFO L276 IsEmpty]: Start isEmpty. Operand 3783 states and 5193 transitions. [2020-10-14 09:07:13,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 09:07:13,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:13,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:07:13,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:07:13,284 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:13,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:13,284 INFO L82 PathProgramCache]: Analyzing trace with hash 715984400, now seen corresponding path program 1 times [2020-10-14 09:07:13,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:13,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569618400] [2020-10-14 09:07:13,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:13,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:13,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:13,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:13,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:13,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:13,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:13,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:14,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:14,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:14,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:14,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:14,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:15,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:15,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:15,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:15,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:15,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:18,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:18,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 09:07:18,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 09:07:18,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:07:18,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:18,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:18,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:07:18,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:07:18,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 09:07:18,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:18,757 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:07:18,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:18,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:18,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:18,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:18,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:18,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 09:07:18,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:18,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:18,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:07:18,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:18,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:07:18,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:18,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569618400] [2020-10-14 09:07:18,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:18,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:07:18,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678968979] [2020-10-14 09:07:18,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:07:18,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:18,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:07:18,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:07:18,845 INFO L87 Difference]: Start difference. First operand 3783 states and 5193 transitions. Second operand 6 states. [2020-10-14 09:07:19,298 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-14 09:07:21,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:21,316 INFO L93 Difference]: Finished difference Result 8905 states and 12286 transitions. [2020-10-14 09:07:21,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:07:21,316 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-14 09:07:21,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:21,340 INFO L225 Difference]: With dead ends: 8905 [2020-10-14 09:07:21,340 INFO L226 Difference]: Without dead ends: 5277 [2020-10-14 09:07:21,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:07:21,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5277 states. [2020-10-14 09:07:21,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5277 to 5247. [2020-10-14 09:07:21,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5247 states. [2020-10-14 09:07:21,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 7192 transitions. [2020-10-14 09:07:21,630 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 7192 transitions. Word has length 58 [2020-10-14 09:07:21,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:21,630 INFO L479 AbstractCegarLoop]: Abstraction has 5247 states and 7192 transitions. [2020-10-14 09:07:21,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:07:21,630 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 7192 transitions. [2020-10-14 09:07:21,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 09:07:21,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:21,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:07:21,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:07:21,634 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:21,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:21,634 INFO L82 PathProgramCache]: Analyzing trace with hash 107470033, now seen corresponding path program 1 times [2020-10-14 09:07:21,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:21,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703628222] [2020-10-14 09:07:21,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:21,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:21,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:21,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:21,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:22,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:22,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:22,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:22,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:22,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:22,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:22,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:22,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:23,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:23,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:23,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:23,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:23,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:23,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:25,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:25,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:25,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:25,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:26,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:26,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 09:07:26,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 09:07:26,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:07:26,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:26,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:26,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 09:07:26,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:07:26,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 09:07:26,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:27,267 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:07:27,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:27,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:27,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:27,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:27,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:27,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 09:07:27,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:27,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:27,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:07:27,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:27,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:07:27,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:27,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:27,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703628222] [2020-10-14 09:07:27,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:27,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:07:27,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27313370] [2020-10-14 09:07:27,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 09:07:27,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:27,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 09:07:27,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:07:27,333 INFO L87 Difference]: Start difference. First operand 5247 states and 7192 transitions. Second operand 10 states. [2020-10-14 09:07:27,785 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-14 09:07:31,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:31,525 INFO L93 Difference]: Finished difference Result 15695 states and 21942 transitions. [2020-10-14 09:07:31,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 09:07:31,525 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-14 09:07:31,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:31,553 INFO L225 Difference]: With dead ends: 15695 [2020-10-14 09:07:31,553 INFO L226 Difference]: Without dead ends: 11496 [2020-10-14 09:07:31,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2020-10-14 09:07:31,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11496 states. [2020-10-14 09:07:32,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11496 to 6348. [2020-10-14 09:07:32,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6348 states. [2020-10-14 09:07:32,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6348 states to 6348 states and 8806 transitions. [2020-10-14 09:07:32,090 INFO L78 Accepts]: Start accepts. Automaton has 6348 states and 8806 transitions. Word has length 58 [2020-10-14 09:07:32,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:32,090 INFO L479 AbstractCegarLoop]: Abstraction has 6348 states and 8806 transitions. [2020-10-14 09:07:32,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 09:07:32,091 INFO L276 IsEmpty]: Start isEmpty. Operand 6348 states and 8806 transitions. [2020-10-14 09:07:32,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 09:07:32,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:32,094 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] [2020-10-14 09:07:32,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:07:32,094 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:32,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:32,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1929619566, now seen corresponding path program 1 times [2020-10-14 09:07:32,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:32,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637978988] [2020-10-14 09:07:32,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:32,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:32,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:32,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:32,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:32,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:32,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:32,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:33,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:33,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:33,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:34,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:34,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:35,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:35,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:35,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:35,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:35,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:37,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:37,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 09:07:37,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 09:07:37,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:07:37,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:37,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:37,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 09:07:37,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:07:37,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 09:07:37,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:37,585 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:07:37,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:37,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:37,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:37,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:37,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:37,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 09:07:37,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:37,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:07:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:07:37,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:37,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:37,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637978988] [2020-10-14 09:07:37,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:37,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:07:37,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193898699] [2020-10-14 09:07:37,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 09:07:37,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:37,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 09:07:37,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:07:37,632 INFO L87 Difference]: Start difference. First operand 6348 states and 8806 transitions. Second operand 10 states. [2020-10-14 09:07:38,097 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-14 09:07:41,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:41,151 INFO L93 Difference]: Finished difference Result 13375 states and 18768 transitions. [2020-10-14 09:07:41,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 09:07:41,152 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-14 09:07:41,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:41,175 INFO L225 Difference]: With dead ends: 13375 [2020-10-14 09:07:41,175 INFO L226 Difference]: Without dead ends: 9494 [2020-10-14 09:07:41,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-14 09:07:41,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9494 states. [2020-10-14 09:07:41,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9494 to 4163. [2020-10-14 09:07:41,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4163 states. [2020-10-14 09:07:41,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4163 states to 4163 states and 5751 transitions. [2020-10-14 09:07:41,612 INFO L78 Accepts]: Start accepts. Automaton has 4163 states and 5751 transitions. Word has length 59 [2020-10-14 09:07:41,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:41,612 INFO L479 AbstractCegarLoop]: Abstraction has 4163 states and 5751 transitions. [2020-10-14 09:07:41,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 09:07:41,612 INFO L276 IsEmpty]: Start isEmpty. Operand 4163 states and 5751 transitions. [2020-10-14 09:07:41,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 09:07:41,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:41,614 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] [2020-10-14 09:07:41,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:07:41,615 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:41,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:41,615 INFO L82 PathProgramCache]: Analyzing trace with hash 875558982, now seen corresponding path program 1 times [2020-10-14 09:07:41,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:41,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444673618] [2020-10-14 09:07:41,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:41,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:41,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:41,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:42,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:42,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:42,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:42,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:44,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:44,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:44,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:44,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:44,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:45,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:45,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:45,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:45,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:46,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:46,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:46,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:46,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:46,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:46,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 09:07:46,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 09:07:46,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:07:46,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:46,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:46,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 09:07:46,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:07:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 09:07:46,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:47,160 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:07:47,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:47,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:47,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:47,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:47,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:47,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:07:47,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:47,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:47,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:07:47,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:47,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:07:47,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:47,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:47,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444673618] [2020-10-14 09:07:47,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:47,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:07:47,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75058877] [2020-10-14 09:07:47,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 09:07:47,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:47,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 09:07:47,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:07:47,204 INFO L87 Difference]: Start difference. First operand 4163 states and 5751 transitions. Second operand 10 states. [2020-10-14 09:07:47,692 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2020-10-14 09:07:50,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:50,922 INFO L93 Difference]: Finished difference Result 12311 states and 17273 transitions. [2020-10-14 09:07:50,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 09:07:50,923 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-14 09:07:50,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:50,943 INFO L225 Difference]: With dead ends: 12311 [2020-10-14 09:07:50,943 INFO L226 Difference]: Without dead ends: 12306 [2020-10-14 09:07:50,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2020-10-14 09:07:50,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12306 states. [2020-10-14 09:07:51,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12306 to 4163. [2020-10-14 09:07:51,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4163 states. [2020-10-14 09:07:51,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4163 states to 4163 states and 5750 transitions. [2020-10-14 09:07:51,485 INFO L78 Accepts]: Start accepts. Automaton has 4163 states and 5750 transitions. Word has length 59 [2020-10-14 09:07:51,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:51,485 INFO L479 AbstractCegarLoop]: Abstraction has 4163 states and 5750 transitions. [2020-10-14 09:07:51,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 09:07:51,485 INFO L276 IsEmpty]: Start isEmpty. Operand 4163 states and 5750 transitions. [2020-10-14 09:07:51,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 09:07:51,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:51,487 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] [2020-10-14 09:07:51,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:07:51,487 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:51,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:51,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1000063139, now seen corresponding path program 1 times [2020-10-14 09:07:51,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:51,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125035541] [2020-10-14 09:07:51,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:51,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:51,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:51,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:51,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:51,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:51,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:52,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:52,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:52,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:52,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:52,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:52,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:55,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:55,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 09:07:55,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:07:55,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3609 [2020-10-14 09:07:55,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:55,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:55,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:07:55,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 09:07:55,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:07:55,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:55,531 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:07:55,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:55,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:55,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:55,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:55,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:55,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:07:55,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:55,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:55,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:07:55,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:55,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:07:55,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:07:55,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:55,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125035541] [2020-10-14 09:07:55,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:55,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:07:55,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805762404] [2020-10-14 09:07:55,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:07:55,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:55,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:07:55,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:07:55,564 INFO L87 Difference]: Start difference. First operand 4163 states and 5750 transitions. Second operand 6 states. [2020-10-14 09:07:58,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:58,205 INFO L93 Difference]: Finished difference Result 17136 states and 24021 transitions. [2020-10-14 09:07:58,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 09:07:58,206 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-14 09:07:58,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:58,223 INFO L225 Difference]: With dead ends: 17136 [2020-10-14 09:07:58,223 INFO L226 Difference]: Without dead ends: 13788 [2020-10-14 09:07:58,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:07:58,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13788 states. [2020-10-14 09:07:58,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13788 to 3991. [2020-10-14 09:07:58,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3991 states. [2020-10-14 09:07:58,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3991 states to 3991 states and 5458 transitions. [2020-10-14 09:07:58,594 INFO L78 Accepts]: Start accepts. Automaton has 3991 states and 5458 transitions. Word has length 59 [2020-10-14 09:07:58,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:58,594 INFO L479 AbstractCegarLoop]: Abstraction has 3991 states and 5458 transitions. [2020-10-14 09:07:58,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:07:58,594 INFO L276 IsEmpty]: Start isEmpty. Operand 3991 states and 5458 transitions. [2020-10-14 09:07:58,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 09:07:58,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:58,595 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] [2020-10-14 09:07:58,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:07:58,596 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:58,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:58,596 INFO L82 PathProgramCache]: Analyzing trace with hash 419329594, now seen corresponding path program 1 times [2020-10-14 09:07:58,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:58,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143340429] [2020-10-14 09:07:58,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:58,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:58,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:58,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:59,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:59,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:01,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:01,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 09:08:01,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:08:01,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2720 [2020-10-14 09:08:01,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:01,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:08:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 09:08:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:08:01,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:01,743 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:08:01,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:01,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:01,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:01,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:01,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:01,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:08:01,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:01,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:01,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:01,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:01,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143340429] [2020-10-14 09:08:01,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:01,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:08:01,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490920683] [2020-10-14 09:08:01,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:08:01,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:01,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:08:01,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:08:01,776 INFO L87 Difference]: Start difference. First operand 3991 states and 5458 transitions. Second operand 4 states. [2020-10-14 09:08:03,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:03,575 INFO L93 Difference]: Finished difference Result 5518 states and 7561 transitions. [2020-10-14 09:08:03,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:08:03,576 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-14 09:08:03,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:03,580 INFO L225 Difference]: With dead ends: 5518 [2020-10-14 09:08:03,580 INFO L226 Difference]: Without dead ends: 3900 [2020-10-14 09:08:03,583 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 [2020-10-14 09:08:03,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3900 states. [2020-10-14 09:08:03,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3900 to 3898. [2020-10-14 09:08:03,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3898 states. [2020-10-14 09:08:03,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3898 states to 3898 states and 5257 transitions. [2020-10-14 09:08:03,862 INFO L78 Accepts]: Start accepts. Automaton has 3898 states and 5257 transitions. Word has length 60 [2020-10-14 09:08:03,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:03,862 INFO L479 AbstractCegarLoop]: Abstraction has 3898 states and 5257 transitions. [2020-10-14 09:08:03,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:08:03,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3898 states and 5257 transitions. [2020-10-14 09:08:03,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 09:08:03,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:03,863 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] [2020-10-14 09:08:03,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:08:03,863 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:03,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:03,864 INFO L82 PathProgramCache]: Analyzing trace with hash 529086290, now seen corresponding path program 1 times [2020-10-14 09:08:03,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:03,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326055753] [2020-10-14 09:08:03,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:03,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:03,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:04,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:04,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:04,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:05,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:05,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 09:08:05,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:08:05,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1750 [2020-10-14 09:08:05,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:05,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:05,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:08:05,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 09:08:05,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 09:08:05,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:06,046 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:08:06,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:06,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:06,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:06,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:06,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:06,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:08:06,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:06,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:06,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:06,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:06,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:06,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:06,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:06,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326055753] [2020-10-14 09:08:06,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:06,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:08:06,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582734856] [2020-10-14 09:08:06,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:08:06,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:06,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:08:06,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:08:06,072 INFO L87 Difference]: Start difference. First operand 3898 states and 5257 transitions. Second operand 4 states. [2020-10-14 09:08:07,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:07,991 INFO L93 Difference]: Finished difference Result 6034 states and 8173 transitions. [2020-10-14 09:08:07,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:08:07,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-14 09:08:07,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:07,996 INFO L225 Difference]: With dead ends: 6034 [2020-10-14 09:08:07,996 INFO L226 Difference]: Without dead ends: 3904 [2020-10-14 09:08:07,999 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 [2020-10-14 09:08:08,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2020-10-14 09:08:08,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 3898. [2020-10-14 09:08:08,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3898 states. [2020-10-14 09:08:08,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3898 states to 3898 states and 5205 transitions. [2020-10-14 09:08:08,292 INFO L78 Accepts]: Start accepts. Automaton has 3898 states and 5205 transitions. Word has length 60 [2020-10-14 09:08:08,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:08,292 INFO L479 AbstractCegarLoop]: Abstraction has 3898 states and 5205 transitions. [2020-10-14 09:08:08,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:08:08,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3898 states and 5205 transitions. [2020-10-14 09:08:08,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 09:08:08,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:08,294 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] [2020-10-14 09:08:08,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:08:08,294 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:08,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:08,294 INFO L82 PathProgramCache]: Analyzing trace with hash 2003969658, now seen corresponding path program 1 times [2020-10-14 09:08:08,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:08,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18923288] [2020-10-14 09:08:08,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:08,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:08,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:08,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:08,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:09,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:09,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:09,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:09,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:11,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:11,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 09:08:11,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:08:11,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3539 [2020-10-14 09:08:11,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:11,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:08:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:08:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 09:08:11,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:08:12,333 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:08:12,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:12,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:12,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:12,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:12,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:12,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:08:12,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:12,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:12,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:12,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:12,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:12,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:12,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:12,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18923288] [2020-10-14 09:08:12,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:12,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:08:12,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217230354] [2020-10-14 09:08:12,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:08:12,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:12,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:08:12,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:08:12,363 INFO L87 Difference]: Start difference. First operand 3898 states and 5205 transitions. Second operand 9 states. [2020-10-14 09:08:12,808 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2020-10-14 09:08:15,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:15,250 INFO L93 Difference]: Finished difference Result 9508 states and 12840 transitions. [2020-10-14 09:08:15,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 09:08:15,250 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-14 09:08:15,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:15,258 INFO L225 Difference]: With dead ends: 9508 [2020-10-14 09:08:15,258 INFO L226 Difference]: Without dead ends: 7076 [2020-10-14 09:08:15,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-14 09:08:15,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7076 states. [2020-10-14 09:08:15,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7076 to 4724. [2020-10-14 09:08:15,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4724 states. [2020-10-14 09:08:15,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4724 states to 4724 states and 6343 transitions. [2020-10-14 09:08:15,664 INFO L78 Accepts]: Start accepts. Automaton has 4724 states and 6343 transitions. Word has length 62 [2020-10-14 09:08:15,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:15,664 INFO L479 AbstractCegarLoop]: Abstraction has 4724 states and 6343 transitions. [2020-10-14 09:08:15,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:08:15,664 INFO L276 IsEmpty]: Start isEmpty. Operand 4724 states and 6343 transitions. [2020-10-14 09:08:15,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 09:08:15,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:15,666 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] [2020-10-14 09:08:15,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 09:08:15,666 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:15,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:15,666 INFO L82 PathProgramCache]: Analyzing trace with hash 297212538, now seen corresponding path program 1 times [2020-10-14 09:08:15,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:15,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614489690] [2020-10-14 09:08:15,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:15,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:15,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:15,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:16,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:16,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:16,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:16,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:16,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:18,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:18,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 09:08:18,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:08:18,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2802 [2020-10-14 09:08:18,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:18,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:08:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:08:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 09:08:18,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:18,987 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:08:18,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:18,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:19,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:19,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:19,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:19,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:08:19,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:19,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:19,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:19,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:19,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:19,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:19,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614489690] [2020-10-14 09:08:19,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:19,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:08:19,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363508846] [2020-10-14 09:08:19,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:08:19,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:19,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:08:19,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:08:19,020 INFO L87 Difference]: Start difference. First operand 4724 states and 6343 transitions. Second operand 9 states. [2020-10-14 09:08:19,481 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 287 [2020-10-14 09:08:22,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:22,534 INFO L93 Difference]: Finished difference Result 11174 states and 15221 transitions. [2020-10-14 09:08:22,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 09:08:22,535 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-14 09:08:22,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:22,545 INFO L225 Difference]: With dead ends: 11174 [2020-10-14 09:08:22,545 INFO L226 Difference]: Without dead ends: 9200 [2020-10-14 09:08:22,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-14 09:08:22,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9200 states. [2020-10-14 09:08:23,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9200 to 6480. [2020-10-14 09:08:23,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6480 states. [2020-10-14 09:08:23,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6480 states to 6480 states and 8791 transitions. [2020-10-14 09:08:23,204 INFO L78 Accepts]: Start accepts. Automaton has 6480 states and 8791 transitions. Word has length 62 [2020-10-14 09:08:23,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:23,205 INFO L479 AbstractCegarLoop]: Abstraction has 6480 states and 8791 transitions. [2020-10-14 09:08:23,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:08:23,205 INFO L276 IsEmpty]: Start isEmpty. Operand 6480 states and 8791 transitions. [2020-10-14 09:08:23,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 09:08:23,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:23,206 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] [2020-10-14 09:08:23,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 09:08:23,207 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:23,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:23,207 INFO L82 PathProgramCache]: Analyzing trace with hash -394914560, now seen corresponding path program 1 times [2020-10-14 09:08:23,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:23,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739008132] [2020-10-14 09:08:23,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:23,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:23,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:23,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:23,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:24,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:24,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:25,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:25,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:25,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:25,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:26,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:27,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:27,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:27,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:27,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:27,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:28,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:28,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:28,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 09:08:28,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 09:08:28,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:08:28,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:28,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:28,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:08:28,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:08:28,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 09:08:28,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:28,734 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:08:28,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:28,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:28,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:28,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:28,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:28,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:08:28,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:28,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:28,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:28,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:28,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739008132] [2020-10-14 09:08:28,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:28,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:08:28,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529217905] [2020-10-14 09:08:28,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:08:28,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:28,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:08:28,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:08:28,764 INFO L87 Difference]: Start difference. First operand 6480 states and 8791 transitions. Second operand 9 states. [2020-10-14 09:08:29,206 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2020-10-14 09:08:31,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:31,386 INFO L93 Difference]: Finished difference Result 8863 states and 12018 transitions. [2020-10-14 09:08:31,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:08:31,386 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-14 09:08:31,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:31,399 INFO L225 Difference]: With dead ends: 8863 [2020-10-14 09:08:31,399 INFO L226 Difference]: Without dead ends: 8589 [2020-10-14 09:08:31,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-14 09:08:31,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8589 states. [2020-10-14 09:08:32,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8589 to 6479. [2020-10-14 09:08:32,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6479 states. [2020-10-14 09:08:32,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6479 states to 6479 states and 8789 transitions. [2020-10-14 09:08:32,057 INFO L78 Accepts]: Start accepts. Automaton has 6479 states and 8789 transitions. Word has length 62 [2020-10-14 09:08:32,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:32,057 INFO L479 AbstractCegarLoop]: Abstraction has 6479 states and 8789 transitions. [2020-10-14 09:08:32,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:08:32,058 INFO L276 IsEmpty]: Start isEmpty. Operand 6479 states and 8789 transitions. [2020-10-14 09:08:32,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 09:08:32,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:32,059 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] [2020-10-14 09:08:32,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 09:08:32,059 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:32,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:32,060 INFO L82 PathProgramCache]: Analyzing trace with hash -839237409, now seen corresponding path program 1 times [2020-10-14 09:08:32,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:32,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85278572] [2020-10-14 09:08:32,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:32,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:32,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:32,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:32,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:32,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:32,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:32,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:33,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:35,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:35,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 09:08:35,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:08:35,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2969 [2020-10-14 09:08:35,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:35,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:35,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:08:35,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:08:35,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 09:08:35,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:35,555 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:08:35,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:35,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:35,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:35,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:35,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:35,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:08:35,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:35,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:35,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:35,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:35,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:35,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:35,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:35,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85278572] [2020-10-14 09:08:35,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:35,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:08:35,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712548402] [2020-10-14 09:08:35,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:08:35,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:35,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:08:35,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:08:35,585 INFO L87 Difference]: Start difference. First operand 6479 states and 8789 transitions. Second operand 9 states. [2020-10-14 09:08:36,071 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 290 [2020-10-14 09:08:38,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:38,595 INFO L93 Difference]: Finished difference Result 8666 states and 11798 transitions. [2020-10-14 09:08:38,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 09:08:38,595 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-14 09:08:38,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:38,605 INFO L225 Difference]: With dead ends: 8666 [2020-10-14 09:08:38,605 INFO L226 Difference]: Without dead ends: 8655 [2020-10-14 09:08:38,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-14 09:08:38,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8655 states. [2020-10-14 09:08:39,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8655 to 6468. [2020-10-14 09:08:39,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6468 states. [2020-10-14 09:08:39,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6468 states to 6468 states and 8777 transitions. [2020-10-14 09:08:39,192 INFO L78 Accepts]: Start accepts. Automaton has 6468 states and 8777 transitions. Word has length 62 [2020-10-14 09:08:39,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:39,192 INFO L479 AbstractCegarLoop]: Abstraction has 6468 states and 8777 transitions. [2020-10-14 09:08:39,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:08:39,192 INFO L276 IsEmpty]: Start isEmpty. Operand 6468 states and 8777 transitions. [2020-10-14 09:08:39,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 09:08:39,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:39,195 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] [2020-10-14 09:08:39,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 09:08:39,196 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:39,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:39,196 INFO L82 PathProgramCache]: Analyzing trace with hash 397284523, now seen corresponding path program 1 times [2020-10-14 09:08:39,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:39,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684211388] [2020-10-14 09:08:39,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:39,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:39,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:39,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:39,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:40,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:40,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:40,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:42,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:42,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 09:08:42,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:08:42,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3453 [2020-10-14 09:08:42,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:42,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:08:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 09:08:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 09:08:42,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:43,075 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:08:43,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:43,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:43,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:43,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:43,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:43,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:08:43,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:43,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:43,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:43,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:43,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:43,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:43,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:43,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684211388] [2020-10-14 09:08:43,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:43,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:08:43,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088376621] [2020-10-14 09:08:43,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:08:43,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:43,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:08:43,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:08:43,103 INFO L87 Difference]: Start difference. First operand 6468 states and 8777 transitions. Second operand 4 states. [2020-10-14 09:08:43,529 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-14 09:08:45,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:45,580 INFO L93 Difference]: Finished difference Result 16461 states and 22438 transitions. [2020-10-14 09:08:45,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:08:45,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-10-14 09:08:45,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:45,592 INFO L225 Difference]: With dead ends: 16461 [2020-10-14 09:08:45,593 INFO L226 Difference]: Without dead ends: 10835 [2020-10-14 09:08:45,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:08:45,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10835 states. [2020-10-14 09:08:46,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10835 to 10833. [2020-10-14 09:08:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10833 states. [2020-10-14 09:08:46,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10833 states to 10833 states and 14520 transitions. [2020-10-14 09:08:46,617 INFO L78 Accepts]: Start accepts. Automaton has 10833 states and 14520 transitions. Word has length 72 [2020-10-14 09:08:46,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:46,618 INFO L479 AbstractCegarLoop]: Abstraction has 10833 states and 14520 transitions. [2020-10-14 09:08:46,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:08:46,618 INFO L276 IsEmpty]: Start isEmpty. Operand 10833 states and 14520 transitions. [2020-10-14 09:08:46,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 09:08:46,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:46,623 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] [2020-10-14 09:08:46,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 09:08:46,623 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:46,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:46,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1004206986, now seen corresponding path program 1 times [2020-10-14 09:08:46,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:46,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187713974] [2020-10-14 09:08:46,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:46,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:46,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:46,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:46,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:47,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:48,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:48,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 09:08:48,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:08:48,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2280 [2020-10-14 09:08:48,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:48,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:48,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:08:48,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 09:08:48,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 09:08:48,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:49,358 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:08:49,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:49,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:49,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:49,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:49,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:49,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:08:49,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:49,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:49,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:49,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:49,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:49,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:49,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187713974] [2020-10-14 09:08:49,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:49,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:08:49,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442823774] [2020-10-14 09:08:49,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:08:49,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:49,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:08:49,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:08:49,398 INFO L87 Difference]: Start difference. First operand 10833 states and 14520 transitions. Second operand 4 states. [2020-10-14 09:08:49,838 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-14 09:08:53,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:53,085 INFO L93 Difference]: Finished difference Result 29757 states and 39948 transitions. [2020-10-14 09:08:53,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:08:53,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-10-14 09:08:53,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:53,107 INFO L225 Difference]: With dead ends: 29757 [2020-10-14 09:08:53,107 INFO L226 Difference]: Without dead ends: 19802 [2020-10-14 09:08:53,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:08:53,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19802 states. [2020-10-14 09:08:54,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19802 to 18510. [2020-10-14 09:08:54,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18510 states. [2020-10-14 09:08:54,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18510 states to 18510 states and 24757 transitions. [2020-10-14 09:08:54,986 INFO L78 Accepts]: Start accepts. Automaton has 18510 states and 24757 transitions. Word has length 73 [2020-10-14 09:08:54,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:54,986 INFO L479 AbstractCegarLoop]: Abstraction has 18510 states and 24757 transitions. [2020-10-14 09:08:54,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:08:54,986 INFO L276 IsEmpty]: Start isEmpty. Operand 18510 states and 24757 transitions. [2020-10-14 09:08:54,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 09:08:54,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:54,990 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] [2020-10-14 09:08:54,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 09:08:54,990 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:54,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:54,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1695683890, now seen corresponding path program 1 times [2020-10-14 09:08:54,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:54,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606406884] [2020-10-14 09:08:54,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:55,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:55,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:55,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:55,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:55,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:56,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:56,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 09:08:56,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:08:56,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1719 [2020-10-14 09:08:56,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:56,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:56,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:08:56,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 09:08:56,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 09:08:56,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:57,163 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:08:57,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:57,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:57,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:57,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:57,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:57,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:08:57,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:57,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:57,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:57,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:57,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606406884] [2020-10-14 09:08:57,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:57,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:08:57,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82782425] [2020-10-14 09:08:57,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:08:57,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:57,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:08:57,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:08:57,194 INFO L87 Difference]: Start difference. First operand 18510 states and 24757 transitions. Second operand 4 states. [2020-10-14 09:08:57,635 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-14 09:09:02,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:09:02,412 INFO L93 Difference]: Finished difference Result 49784 states and 66543 transitions. [2020-10-14 09:09:02,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:09:02,413 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-10-14 09:09:02,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:09:02,449 INFO L225 Difference]: With dead ends: 49784 [2020-10-14 09:09:02,449 INFO L226 Difference]: Without dead ends: 32152 [2020-10-14 09:09:02,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:09:02,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32152 states. [2020-10-14 09:09:06,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32152 to 29954. [2020-10-14 09:09:06,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29954 states. [2020-10-14 09:09:06,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29954 states to 29954 states and 39601 transitions. [2020-10-14 09:09:06,861 INFO L78 Accepts]: Start accepts. Automaton has 29954 states and 39601 transitions. Word has length 74 [2020-10-14 09:09:06,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:09:06,861 INFO L479 AbstractCegarLoop]: Abstraction has 29954 states and 39601 transitions. [2020-10-14 09:09:06,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:09:06,861 INFO L276 IsEmpty]: Start isEmpty. Operand 29954 states and 39601 transitions. [2020-10-14 09:09:06,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 09:09:06,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:09:06,864 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] [2020-10-14 09:09:06,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 09:09:06,864 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:09:06,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:09:06,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1163986659, now seen corresponding path program 1 times [2020-10-14 09:09:06,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:09:06,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686057263] [2020-10-14 09:09:06,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:09:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:06,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:06,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:06,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:07,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:07,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:07,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:08,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:08,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 09:09:08,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:09:08,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1574 [2020-10-14 09:09:08,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:08,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:08,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:09:08,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 09:09:08,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 09:09:08,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:08,902 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:09:08,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:09:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:08,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:08,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:08,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:09:08,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:09:08,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:09:08,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:08,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:09:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:09:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:09:08,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:09:08,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686057263] [2020-10-14 09:09:08,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:09:08,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:09:08,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069067507] [2020-10-14 09:09:08,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:09:08,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:09:08,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:09:08,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:09:08,937 INFO L87 Difference]: Start difference. First operand 29954 states and 39601 transitions. Second operand 4 states. [2020-10-14 09:09:09,408 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-14 09:09:17,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:09:17,370 INFO L93 Difference]: Finished difference Result 84442 states and 111055 transitions. [2020-10-14 09:09:17,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:09:17,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-10-14 09:09:17,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:09:17,439 INFO L225 Difference]: With dead ends: 84442 [2020-10-14 09:09:17,440 INFO L226 Difference]: Without dead ends: 55170 [2020-10-14 09:09:17,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:09:17,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55170 states. [2020-10-14 09:09:23,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55170 to 50164. [2020-10-14 09:09:23,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50164 states. [2020-10-14 09:09:23,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50164 states to 50164 states and 65573 transitions. [2020-10-14 09:09:23,787 INFO L78 Accepts]: Start accepts. Automaton has 50164 states and 65573 transitions. Word has length 75 [2020-10-14 09:09:23,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:09:23,788 INFO L479 AbstractCegarLoop]: Abstraction has 50164 states and 65573 transitions. [2020-10-14 09:09:23,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:09:23,788 INFO L276 IsEmpty]: Start isEmpty. Operand 50164 states and 65573 transitions. [2020-10-14 09:09:23,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 09:09:23,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:09:23,790 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] [2020-10-14 09:09:23,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 09:09:23,790 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:09:23,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:09:23,790 INFO L82 PathProgramCache]: Analyzing trace with hash -74176307, now seen corresponding path program 1 times [2020-10-14 09:09:23,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:09:23,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930280492] [2020-10-14 09:09:23,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:09:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:23,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:23,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:23,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:23,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:24,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:24,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:24,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:24,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:24,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:25,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:25,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 09:09:25,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:09:25,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1225 [2020-10-14 09:09:25,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:25,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:25,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:09:25,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 09:09:25,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 09:09:25,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:25,462 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:09:25,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:09:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:25,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:25,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:25,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:09:25,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:09:25,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:09:25,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:25,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:09:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:09:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:09:25,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:09:25,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930280492] [2020-10-14 09:09:25,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:09:25,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:09:25,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873099072] [2020-10-14 09:09:25,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:09:25,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:09:25,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:09:25,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:09:25,499 INFO L87 Difference]: Start difference. First operand 50164 states and 65573 transitions. Second operand 6 states. [2020-10-14 09:09:33,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:09:33,719 INFO L93 Difference]: Finished difference Result 50170 states and 65576 transitions. [2020-10-14 09:09:33,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:09:33,720 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-14 09:09:33,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:09:33,763 INFO L225 Difference]: With dead ends: 50170 [2020-10-14 09:09:33,763 INFO L226 Difference]: Without dead ends: 44721 [2020-10-14 09:09:33,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:09:33,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44721 states. [2020-10-14 09:09:39,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44721 to 44717. [2020-10-14 09:09:39,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44717 states. [2020-10-14 09:09:39,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44717 states to 44717 states and 58484 transitions. [2020-10-14 09:09:39,174 INFO L78 Accepts]: Start accepts. Automaton has 44717 states and 58484 transitions. Word has length 76 [2020-10-14 09:09:39,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:09:39,175 INFO L479 AbstractCegarLoop]: Abstraction has 44717 states and 58484 transitions. [2020-10-14 09:09:39,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:09:39,175 INFO L276 IsEmpty]: Start isEmpty. Operand 44717 states and 58484 transitions. [2020-10-14 09:09:39,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-14 09:09:39,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:09:39,177 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] [2020-10-14 09:09:39,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 09:09:39,177 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:09:39,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:09:39,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1411374752, now seen corresponding path program 1 times [2020-10-14 09:09:39,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:09:39,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708288718] [2020-10-14 09:09:39,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:09:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:39,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:39,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:39,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:39,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:41,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:41,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 09:09:41,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 09:09:41,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2240 [2020-10-14 09:09:41,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:41,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:41,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:09:41,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 09:09:41,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 09:09:41,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:41,865 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-14 09:09:41,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:09:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:41,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:41,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:41,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:09:41,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:09:41,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:09:41,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:41,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:41,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:09:41,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:09:41,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:09:41,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:41,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:09:41,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708288718] [2020-10-14 09:09:41,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:09:41,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:09:41,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718827829] [2020-10-14 09:09:41,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:09:41,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:09:41,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:09:41,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:09:41,892 INFO L87 Difference]: Start difference. First operand 44717 states and 58484 transitions. Second operand 6 states.