/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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:35:40,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:35:40,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:35:40,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:35:40,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:35:40,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:35:40,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:35:40,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:35:40,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:35:40,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:35:40,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:35:40,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:35:40,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:35:40,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:35:40,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:35:40,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:35:40,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:35:40,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:35:40,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:35:40,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:35:40,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:35:40,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:35:40,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:35:40,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:35:40,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:35:40,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:35:40,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:35:40,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:35:40,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:35:40,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:35:40,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:35:40,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:35:40,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:35:40,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:35:40,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:35:40,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:35:40,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:35:40,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:35:40,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:35:40,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:35:40,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:35:40,229 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 09:35:40,252 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:35:40,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:35:40,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:35:40,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:35:40,254 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:35:40,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:35:40,254 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:35:40,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:35:40,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:35:40,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:35:40,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:35:40,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:35:40,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:35:40,255 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:35:40,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:35:40,256 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:35:40,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:35:40,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:35:40,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:35:40,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:35:40,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:35:40,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:35:40,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:35:40,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:35:40,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:35:40,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:35:40,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:35:40,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:35:40,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:35:40,258 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 09:35:40,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:35:40,611 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:35:40,615 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:35:40,617 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:35:40,617 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:35:40,618 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:35:40,677 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78d3f8ede/fe16e27d65a34428b394bda20af4ff77/FLAG359860a08 [2020-10-14 09:35:41,249 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:35:41,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:35:41,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78d3f8ede/fe16e27d65a34428b394bda20af4ff77/FLAG359860a08 [2020-10-14 09:35:41,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78d3f8ede/fe16e27d65a34428b394bda20af4ff77 [2020-10-14 09:35:41,537 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:35:41,539 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:35:41,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:35:41,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:35:41,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:35:41,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:35:41" (1/1) ... [2020-10-14 09:35:41,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@597ede07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:41, skipping insertion in model container [2020-10-14 09:35:41,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:35:41" (1/1) ... [2020-10-14 09:35:41,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:35:41,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:35:42,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:35:42,115 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:35:42,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:35:42,272 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:35:42,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:42 WrapperNode [2020-10-14 09:35:42,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:35:42,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:35:42,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:35:42,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:35:42,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:42" (1/1) ... [2020-10-14 09:35:42,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:42" (1/1) ... [2020-10-14 09:35:42,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:42" (1/1) ... [2020-10-14 09:35:42,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:42" (1/1) ... [2020-10-14 09:35:42,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:42" (1/1) ... [2020-10-14 09:35:42,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:42" (1/1) ... [2020-10-14 09:35:42,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:42" (1/1) ... [2020-10-14 09:35:42,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:35:42,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:35:42,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:35:42,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:35:42,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:42" (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 09:35:42,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:35:42,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:35:42,460 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:35:42,461 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:35:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:35:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:35:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:35:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:35:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:35:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:35:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:35:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:35:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:35:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:35:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:35:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:35:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:35:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:35:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:35:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:35:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:35:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:35:43,790 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:35:43,790 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:35:43,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:35:43 BoogieIcfgContainer [2020-10-14 09:35:43,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:35:43,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:35:43,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:35:43,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:35:43,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:35:41" (1/3) ... [2020-10-14 09:35:43,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9e8412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:35:43, skipping insertion in model container [2020-10-14 09:35:43,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:35:42" (2/3) ... [2020-10-14 09:35:43,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9e8412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:35:43, skipping insertion in model container [2020-10-14 09:35:43,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:35:43" (3/3) ... [2020-10-14 09:35:43,805 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:35:43,815 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:35:43,823 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:35:43,836 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:35:43,861 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:35:43,861 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:35:43,861 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:35:43,861 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:35:43,861 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:35:43,862 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:35:43,862 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:35:43,862 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:35:43,885 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states. [2020-10-14 09:35:43,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 09:35:43,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:35:43,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:35:43,905 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:35:43,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:35:43,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1373065631, now seen corresponding path program 1 times [2020-10-14 09:35:43,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:35:43,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040586607] [2020-10-14 09:35:43,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:35:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:44,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:44,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:45,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:46,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:46,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:49,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:49,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 09:35:49,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:35:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 09:35:49,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:49,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:49,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:35:49,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 09:35:49,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 09:35:49,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:35:50,056 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:35:50,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:35:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:50,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:50,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:50,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:35:50,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:35:50,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 09:35:50,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:50,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:50,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:35:50,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:35:50,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:35:50,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:35:50,195 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 09:35:50,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040586607] [2020-10-14 09:35:50,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:35:50,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:35:50,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040542343] [2020-10-14 09:35:50,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:35:50,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:35:50,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:35:50,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:35:50,232 INFO L87 Difference]: Start difference. First operand 355 states. Second operand 4 states. [2020-10-14 09:35:50,907 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:35:53,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:35:53,134 INFO L93 Difference]: Finished difference Result 661 states and 1135 transitions. [2020-10-14 09:35:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:35:53,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-14 09:35:53,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:35:53,172 INFO L225 Difference]: With dead ends: 661 [2020-10-14 09:35:53,172 INFO L226 Difference]: Without dead ends: 495 [2020-10-14 09:35:53,178 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 09:35:53,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-10-14 09:35:53,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 492. [2020-10-14 09:35:53,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2020-10-14 09:35:53,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 813 transitions. [2020-10-14 09:35:53,265 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 813 transitions. Word has length 122 [2020-10-14 09:35:53,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:35:53,266 INFO L479 AbstractCegarLoop]: Abstraction has 492 states and 813 transitions. [2020-10-14 09:35:53,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:35:53,266 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 813 transitions. [2020-10-14 09:35:53,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 09:35:53,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:35:53,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:35:53,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:35:53,271 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:35:53,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:35:53,271 INFO L82 PathProgramCache]: Analyzing trace with hash -407523285, now seen corresponding path program 1 times [2020-10-14 09:35:53,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:35:53,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396160455] [2020-10-14 09:35:53,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:35:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:53,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:53,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:53,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:54,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:54,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:55,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:55,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:58,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:58,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 09:35:58,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:35:58,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 09:35:58,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:58,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:58,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:35:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 09:35:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 09:35:58,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:35:58,899 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:35:58,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:35:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:58,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:58,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:58,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:35:58,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:35:58,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:35:58,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:58,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:58,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:35:58,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:35:58,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:35:58,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:35:58,960 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 09:35:58,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396160455] [2020-10-14 09:35:58,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:35:58,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:35:58,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564284175] [2020-10-14 09:35:58,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:35:58,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:35:58,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:35:58,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:35:58,964 INFO L87 Difference]: Start difference. First operand 492 states and 813 transitions. Second operand 4 states. [2020-10-14 09:35:59,357 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:36:01,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:36:01,177 INFO L93 Difference]: Finished difference Result 1062 states and 1769 transitions. [2020-10-14 09:36:01,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:36:01,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2020-10-14 09:36:01,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:36:01,187 INFO L225 Difference]: With dead ends: 1062 [2020-10-14 09:36:01,188 INFO L226 Difference]: Without dead ends: 767 [2020-10-14 09:36:01,191 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 09:36:01,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2020-10-14 09:36:01,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 763. [2020-10-14 09:36:01,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-10-14 09:36:01,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1266 transitions. [2020-10-14 09:36:01,275 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1266 transitions. Word has length 125 [2020-10-14 09:36:01,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:36:01,276 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 1266 transitions. [2020-10-14 09:36:01,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:36:01,276 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1266 transitions. [2020-10-14 09:36:01,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 09:36:01,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:36:01,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:36:01,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:36:01,279 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:36:01,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:36:01,280 INFO L82 PathProgramCache]: Analyzing trace with hash 302119668, now seen corresponding path program 1 times [2020-10-14 09:36:01,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:36:01,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811733231] [2020-10-14 09:36:01,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:36:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:01,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:01,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:01,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:01,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:02,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:04,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:04,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:04,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:04,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:06,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:06,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 09:36:06,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:36:06,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-14 09:36:06,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:06,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:36:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 09:36:06,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 09:36:06,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:36:06,971 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:36:06,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:36:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:07,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:07,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:07,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:36:07,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:36:07,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 09:36:07,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:07,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:07,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:36:07,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:36:07,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:36:07,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:36:07,100 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 09:36:07,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811733231] [2020-10-14 09:36:07,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:36:07,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:36:07,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874654214] [2020-10-14 09:36:07,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:36:07,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:36:07,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:36:07,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:36:07,115 INFO L87 Difference]: Start difference. First operand 763 states and 1266 transitions. Second operand 4 states. [2020-10-14 09:36:07,678 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:36:09,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:36:09,555 INFO L93 Difference]: Finished difference Result 1855 states and 3092 transitions. [2020-10-14 09:36:09,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:36:09,556 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-14 09:36:09,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:36:09,569 INFO L225 Difference]: With dead ends: 1855 [2020-10-14 09:36:09,570 INFO L226 Difference]: Without dead ends: 1289 [2020-10-14 09:36:09,573 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 09:36:09,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2020-10-14 09:36:09,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1283. [2020-10-14 09:36:09,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1283 states. [2020-10-14 09:36:09,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 2130 transitions. [2020-10-14 09:36:09,640 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 2130 transitions. Word has length 128 [2020-10-14 09:36:09,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:36:09,642 INFO L479 AbstractCegarLoop]: Abstraction has 1283 states and 2130 transitions. [2020-10-14 09:36:09,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:36:09,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 2130 transitions. [2020-10-14 09:36:09,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 09:36:09,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:36:09,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:36:09,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:36:09,650 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:36:09,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:36:09,651 INFO L82 PathProgramCache]: Analyzing trace with hash -152382628, now seen corresponding path program 1 times [2020-10-14 09:36:09,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:36:09,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224901349] [2020-10-14 09:36:09,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:36:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:09,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:09,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:09,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:10,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:10,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:10,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:10,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:14,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:14,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 09:36:14,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:36:14,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 09:36:14,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:14,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:14,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:36:14,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 09:36:14,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 09:36:14,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:36:15,114 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:36:15,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:36:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:15,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:15,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:15,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:36:15,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:36:15,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:36:15,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:15,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:15,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:36:15,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:36:15,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:36:15,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:36:15,172 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 09:36:15,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224901349] [2020-10-14 09:36:15,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:36:15,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:36:15,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95190764] [2020-10-14 09:36:15,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:36:15,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:36:15,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:36:15,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:36:15,176 INFO L87 Difference]: Start difference. First operand 1283 states and 2130 transitions. Second operand 4 states. [2020-10-14 09:36:15,589 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:36:17,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:36:17,414 INFO L93 Difference]: Finished difference Result 3359 states and 5580 transitions. [2020-10-14 09:36:17,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:36:17,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-14 09:36:17,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:36:17,428 INFO L225 Difference]: With dead ends: 3359 [2020-10-14 09:36:17,429 INFO L226 Difference]: Without dead ends: 2273 [2020-10-14 09:36:17,432 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 09:36:17,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2020-10-14 09:36:17,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2263. [2020-10-14 09:36:17,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2263 states. [2020-10-14 09:36:17,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 3710 transitions. [2020-10-14 09:36:17,556 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 3710 transitions. Word has length 131 [2020-10-14 09:36:17,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:36:17,557 INFO L479 AbstractCegarLoop]: Abstraction has 2263 states and 3710 transitions. [2020-10-14 09:36:17,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:36:17,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 3710 transitions. [2020-10-14 09:36:17,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 09:36:17,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:36:17,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:36:17,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:36:17,561 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:36:17,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:36:17,561 INFO L82 PathProgramCache]: Analyzing trace with hash -527002627, now seen corresponding path program 1 times [2020-10-14 09:36:17,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:36:17,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253568430] [2020-10-14 09:36:17,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:36:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:17,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:17,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:17,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:18,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:18,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:18,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:18,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:18,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:22,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:22,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 09:36:22,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:36:22,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:36:22,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:22,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:22,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:36:22,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:36:22,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 09:36:22,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:36:23,115 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:36:23,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:36:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:23,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:23,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:23,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:36:23,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:36:23,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:36:23,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:23,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:23,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:36:23,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:36:23,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:36:23,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:36:23,221 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 09:36:23,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253568430] [2020-10-14 09:36:23,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:36:23,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:36:23,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923364470] [2020-10-14 09:36:23,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:36:23,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:36:23,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:36:23,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:36:23,224 INFO L87 Difference]: Start difference. First operand 2263 states and 3710 transitions. Second operand 5 states. [2020-10-14 09:36:25,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:36:25,711 INFO L93 Difference]: Finished difference Result 6605 states and 10818 transitions. [2020-10-14 09:36:25,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:36:25,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-14 09:36:25,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:36:25,739 INFO L225 Difference]: With dead ends: 6605 [2020-10-14 09:36:25,739 INFO L226 Difference]: Without dead ends: 4407 [2020-10-14 09:36:25,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:36:25,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4407 states. [2020-10-14 09:36:25,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4407 to 4405. [2020-10-14 09:36:25,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4405 states. [2020-10-14 09:36:25,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4405 states to 4405 states and 7195 transitions. [2020-10-14 09:36:25,974 INFO L78 Accepts]: Start accepts. Automaton has 4405 states and 7195 transitions. Word has length 134 [2020-10-14 09:36:25,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:36:25,975 INFO L479 AbstractCegarLoop]: Abstraction has 4405 states and 7195 transitions. [2020-10-14 09:36:25,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:36:25,975 INFO L276 IsEmpty]: Start isEmpty. Operand 4405 states and 7195 transitions. [2020-10-14 09:36:25,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 09:36:25,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:36:25,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:36:25,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:36:25,982 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:36:25,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:36:25,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1931057901, now seen corresponding path program 1 times [2020-10-14 09:36:25,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:36:25,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789517271] [2020-10-14 09:36:25,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:36:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:26,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:26,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:26,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:26,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:27,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:27,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:27,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:27,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:31,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:31,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 09:36:31,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:36:31,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 09:36:31,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:31,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:36:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 09:36:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 09:36:31,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:36:31,410 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:36:31,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:36:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:31,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:31,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:31,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:36:31,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:36:31,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:36:31,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:31,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:31,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:36:31,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:36:31,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:36:31,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:36:31,461 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 09:36:31,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789517271] [2020-10-14 09:36:31,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:36:31,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:36:31,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379941077] [2020-10-14 09:36:31,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:36:31,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:36:31,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:36:31,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:36:31,464 INFO L87 Difference]: Start difference. First operand 4405 states and 7195 transitions. Second operand 4 states. [2020-10-14 09:36:33,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:36:33,322 INFO L93 Difference]: Finished difference Result 10349 states and 16969 transitions. [2020-10-14 09:36:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:36:33,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-10-14 09:36:33,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:36:33,351 INFO L225 Difference]: With dead ends: 10349 [2020-10-14 09:36:33,351 INFO L226 Difference]: Without dead ends: 6307 [2020-10-14 09:36:33,362 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 09:36:33,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6307 states. [2020-10-14 09:36:33,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6307 to 6161. [2020-10-14 09:36:33,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6161 states. [2020-10-14 09:36:33,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6161 states to 6161 states and 10015 transitions. [2020-10-14 09:36:33,697 INFO L78 Accepts]: Start accepts. Automaton has 6161 states and 10015 transitions. Word has length 135 [2020-10-14 09:36:33,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:36:33,698 INFO L479 AbstractCegarLoop]: Abstraction has 6161 states and 10015 transitions. [2020-10-14 09:36:33,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:36:33,698 INFO L276 IsEmpty]: Start isEmpty. Operand 6161 states and 10015 transitions. [2020-10-14 09:36:33,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 09:36:33,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:36:33,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:36:33,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:36:33,702 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:36:33,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:36:33,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1952334613, now seen corresponding path program 1 times [2020-10-14 09:36:33,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:36:33,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866281235] [2020-10-14 09:36:33,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:36:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:33,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:33,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:33,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:34,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:34,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:34,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:34,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:34,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:34,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:38,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:38,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 09:36:38,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:36:38,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:36:38,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:38,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:38,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:36:38,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 09:36:38,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 09:36:38,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:36:39,130 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:36:39,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:36:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:39,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:39,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:39,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:36:39,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:36:39,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:36:39,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:39,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:39,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:36:39,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:36:39,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:36:39,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:36:39,200 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 09:36:39,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866281235] [2020-10-14 09:36:39,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:36:39,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:36:39,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960228878] [2020-10-14 09:36:39,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:36:39,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:36:39,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:36:39,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:36:39,202 INFO L87 Difference]: Start difference. First operand 6161 states and 10015 transitions. Second operand 4 states. [2020-10-14 09:36:42,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:36:42,515 INFO L93 Difference]: Finished difference Result 18059 states and 29329 transitions. [2020-10-14 09:36:42,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:36:42,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-10-14 09:36:42,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:36:42,570 INFO L225 Difference]: With dead ends: 18059 [2020-10-14 09:36:42,570 INFO L226 Difference]: Without dead ends: 11993 [2020-10-14 09:36:42,596 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 09:36:42,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11993 states. [2020-10-14 09:36:43,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11993 to 11991. [2020-10-14 09:36:43,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11991 states. [2020-10-14 09:36:43,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11991 states to 11991 states and 19404 transitions. [2020-10-14 09:36:43,408 INFO L78 Accepts]: Start accepts. Automaton has 11991 states and 19404 transitions. Word has length 136 [2020-10-14 09:36:43,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:36:43,409 INFO L479 AbstractCegarLoop]: Abstraction has 11991 states and 19404 transitions. [2020-10-14 09:36:43,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:36:43,409 INFO L276 IsEmpty]: Start isEmpty. Operand 11991 states and 19404 transitions. [2020-10-14 09:36:43,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 09:36:43,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:36:43,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:36:43,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:36:43,418 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:36:43,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:36:43,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1312509264, now seen corresponding path program 1 times [2020-10-14 09:36:43,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:36:43,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580257304] [2020-10-14 09:36:43,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:36:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:43,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:43,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:43,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:43,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:43,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:44,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:44,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:44,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:44,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:45,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:48,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:48,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 09:36:48,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:36:48,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:36:48,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:48,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:48,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:36:48,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 09:36:48,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 09:36:48,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:36:48,829 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:36:48,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:36:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:48,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:48,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:48,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:36:48,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:36:48,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:36:48,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:48,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:36:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:36:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:36:48,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:36:48,862 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 09:36:48,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580257304] [2020-10-14 09:36:48,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:36:48,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:36:48,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042338555] [2020-10-14 09:36:48,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:36:48,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:36:48,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:36:48,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:36:48,865 INFO L87 Difference]: Start difference. First operand 11991 states and 19404 transitions. Second operand 4 states. [2020-10-14 09:36:52,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:36:52,642 INFO L93 Difference]: Finished difference Result 35785 states and 57874 transitions. [2020-10-14 09:36:52,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:36:52,643 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-10-14 09:36:52,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:36:52,691 INFO L225 Difference]: With dead ends: 35785 [2020-10-14 09:36:52,692 INFO L226 Difference]: Without dead ends: 23890 [2020-10-14 09:36:52,717 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 09:36:52,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23890 states. [2020-10-14 09:36:53,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23890 to 12008. [2020-10-14 09:36:53,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12008 states. [2020-10-14 09:36:53,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12008 states to 12008 states and 19426 transitions. [2020-10-14 09:36:53,270 INFO L78 Accepts]: Start accepts. Automaton has 12008 states and 19426 transitions. Word has length 136 [2020-10-14 09:36:53,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:36:53,271 INFO L479 AbstractCegarLoop]: Abstraction has 12008 states and 19426 transitions. [2020-10-14 09:36:53,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:36:53,271 INFO L276 IsEmpty]: Start isEmpty. Operand 12008 states and 19426 transitions. [2020-10-14 09:36:53,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 09:36:53,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:36:53,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:36:53,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:36:53,278 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:36:53,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:36:53,278 INFO L82 PathProgramCache]: Analyzing trace with hash -862745196, now seen corresponding path program 1 times [2020-10-14 09:36:53,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:36:53,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415025256] [2020-10-14 09:36:53,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:36:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:53,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:53,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:53,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:53,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:53,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:53,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:53,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:54,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:58,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:58,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 09:36:58,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:36:58,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:36:58,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:58,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:58,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:36:58,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 09:36:58,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 09:36:58,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:36:58,699 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:36:58,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:36:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:58,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:58,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:58,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:36:58,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:36:58,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:36:58,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:58,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:58,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:36:58,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:36:58,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:36:58,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:36:58,749 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 09:36:58,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415025256] [2020-10-14 09:36:58,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:36:58,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:36:58,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912430358] [2020-10-14 09:36:58,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:36:58,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:36:58,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:36:58,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:36:58,752 INFO L87 Difference]: Start difference. First operand 12008 states and 19426 transitions. Second operand 4 states. [2020-10-14 09:37:00,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:00,934 INFO L93 Difference]: Finished difference Result 28644 states and 46524 transitions. [2020-10-14 09:37:00,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:37:00,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-10-14 09:37:00,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:00,980 INFO L225 Difference]: With dead ends: 28644 [2020-10-14 09:37:00,981 INFO L226 Difference]: Without dead ends: 17314 [2020-10-14 09:37:01,006 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 09:37:01,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17314 states. [2020-10-14 09:37:02,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17314 to 16880. [2020-10-14 09:37:02,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16880 states. [2020-10-14 09:37:02,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16880 states to 16880 states and 27146 transitions. [2020-10-14 09:37:02,473 INFO L78 Accepts]: Start accepts. Automaton has 16880 states and 27146 transitions. Word has length 137 [2020-10-14 09:37:02,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:37:02,473 INFO L479 AbstractCegarLoop]: Abstraction has 16880 states and 27146 transitions. [2020-10-14 09:37:02,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:37:02,474 INFO L276 IsEmpty]: Start isEmpty. Operand 16880 states and 27146 transitions. [2020-10-14 09:37:02,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 09:37:02,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:02,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:37:02,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:37:02,479 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:02,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:02,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1008207763, now seen corresponding path program 1 times [2020-10-14 09:37:02,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:02,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876061006] [2020-10-14 09:37:02,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:02,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:02,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:02,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:02,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:03,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:03,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:03,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:03,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:07,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:07,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 09:37:07,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:37:07,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 09:37:07,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:07,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:07,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:37:07,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 09:37:07,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 09:37:07,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:37:07,923 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:37:07,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:07,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:07,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:07,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:07,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:07,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:37:07,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:07,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:07,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:07,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:07,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:07,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:07,955 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 09:37:07,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876061006] [2020-10-14 09:37:07,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:07,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:37:07,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425406362] [2020-10-14 09:37:07,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:37:07,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:07,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:37:07,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:07,957 INFO L87 Difference]: Start difference. First operand 16880 states and 27146 transitions. Second operand 4 states. [2020-10-14 09:37:12,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:12,143 INFO L93 Difference]: Finished difference Result 50439 states and 81088 transitions. [2020-10-14 09:37:12,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:37:12,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-10-14 09:37:12,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:12,217 INFO L225 Difference]: With dead ends: 50439 [2020-10-14 09:37:12,217 INFO L226 Difference]: Without dead ends: 33668 [2020-10-14 09:37:12,256 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 09:37:12,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33668 states. [2020-10-14 09:37:13,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33668 to 16914. [2020-10-14 09:37:13,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16914 states. [2020-10-14 09:37:13,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16914 states to 16914 states and 27194 transitions. [2020-10-14 09:37:13,301 INFO L78 Accepts]: Start accepts. Automaton has 16914 states and 27194 transitions. Word has length 137 [2020-10-14 09:37:13,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:37:13,302 INFO L479 AbstractCegarLoop]: Abstraction has 16914 states and 27194 transitions. [2020-10-14 09:37:13,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:37:13,302 INFO L276 IsEmpty]: Start isEmpty. Operand 16914 states and 27194 transitions. [2020-10-14 09:37:13,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 09:37:13,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:13,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:37:13,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:37:13,309 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:13,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:13,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1881834089, now seen corresponding path program 1 times [2020-10-14 09:37:13,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:13,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350653821] [2020-10-14 09:37:13,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:13,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:13,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:13,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:13,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:13,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:13,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:14,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:14,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:14,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:14,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:18,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:18,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 09:37:18,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:37:18,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:37:18,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:18,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:18,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:37:18,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 09:37:18,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:37:18,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:18,745 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:37:18,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:18,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:18,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:18,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:18,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:18,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:37:18,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:18,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:18,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:18,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:18,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:18,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:18,781 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 09:37:18,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350653821] [2020-10-14 09:37:18,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:18,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:37:18,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999498303] [2020-10-14 09:37:18,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:37:18,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:18,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:37:18,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:18,783 INFO L87 Difference]: Start difference. First operand 16914 states and 27194 transitions. Second operand 4 states. [2020-10-14 09:37:19,179 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:37:21,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:21,970 INFO L93 Difference]: Finished difference Result 32662 states and 52692 transitions. [2020-10-14 09:37:21,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:37:21,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-10-14 09:37:21,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:22,007 INFO L225 Difference]: With dead ends: 32662 [2020-10-14 09:37:22,007 INFO L226 Difference]: Without dead ends: 21844 [2020-10-14 09:37:22,029 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 09:37:22,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21844 states. [2020-10-14 09:37:22,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21844 to 21842. [2020-10-14 09:37:22,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21842 states. [2020-10-14 09:37:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21842 states to 21842 states and 35082 transitions. [2020-10-14 09:37:23,008 INFO L78 Accepts]: Start accepts. Automaton has 21842 states and 35082 transitions. Word has length 137 [2020-10-14 09:37:23,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:37:23,009 INFO L479 AbstractCegarLoop]: Abstraction has 21842 states and 35082 transitions. [2020-10-14 09:37:23,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:37:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 21842 states and 35082 transitions. [2020-10-14 09:37:23,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 09:37:23,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:23,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:37:23,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:37:23,014 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:23,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:23,014 INFO L82 PathProgramCache]: Analyzing trace with hash 759154758, now seen corresponding path program 1 times [2020-10-14 09:37:23,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:23,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228080869] [2020-10-14 09:37:23,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:23,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:23,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:23,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:23,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:23,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:24,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:24,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:24,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:24,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:28,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:28,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 09:37:28,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:37:28,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:37:28,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:28,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:28,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:37:28,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 09:37:28,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 09:37:28,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:28,570 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:37:28,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:28,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:28,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:28,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:28,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:28,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:37:28,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:28,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:28,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:28,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:28,630 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 09:37:28,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228080869] [2020-10-14 09:37:28,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:28,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:37:28,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146031816] [2020-10-14 09:37:28,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:37:28,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:28,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:37:28,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:28,632 INFO L87 Difference]: Start difference. First operand 21842 states and 35082 transitions. Second operand 4 states. [2020-10-14 09:37:33,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:33,262 INFO L93 Difference]: Finished difference Result 64263 states and 103171 transitions. [2020-10-14 09:37:33,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:37:33,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-10-14 09:37:33,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:33,318 INFO L225 Difference]: With dead ends: 64263 [2020-10-14 09:37:33,318 INFO L226 Difference]: Without dead ends: 42562 [2020-10-14 09:37:33,343 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 09:37:33,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42562 states. [2020-10-14 09:37:35,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42562 to 42560. [2020-10-14 09:37:35,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42560 states. [2020-10-14 09:37:35,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42560 states to 42560 states and 68020 transitions. [2020-10-14 09:37:35,357 INFO L78 Accepts]: Start accepts. Automaton has 42560 states and 68020 transitions. Word has length 138 [2020-10-14 09:37:35,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:37:35,357 INFO L479 AbstractCegarLoop]: Abstraction has 42560 states and 68020 transitions. [2020-10-14 09:37:35,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:37:35,357 INFO L276 IsEmpty]: Start isEmpty. Operand 42560 states and 68020 transitions. [2020-10-14 09:37:35,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 09:37:35,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:35,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:37:35,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:37:35,365 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:35,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:35,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1887293597, now seen corresponding path program 1 times [2020-10-14 09:37:35,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:35,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780864205] [2020-10-14 09:37:35,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:35,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:35,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:35,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:35,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:35,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:35,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:36,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:39,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:39,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:39,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:40,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:40,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 09:37:40,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:37:40,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:37:40,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:40,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:40,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:37:40,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:37:40,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 09:37:40,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:41,007 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:37:41,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:41,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:41,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:41,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:41,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:41,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:37:41,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:41,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:41,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:41,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:41,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:41,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:41,061 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 09:37:41,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780864205] [2020-10-14 09:37:41,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:41,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:37:41,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506928608] [2020-10-14 09:37:41,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:37:41,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:41,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:37:41,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:37:41,063 INFO L87 Difference]: Start difference. First operand 42560 states and 68020 transitions. Second operand 5 states. [2020-10-14 09:37:47,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:47,376 INFO L93 Difference]: Finished difference Result 125645 states and 200934 transitions. [2020-10-14 09:37:47,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:37:47,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-14 09:37:47,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:47,486 INFO L225 Difference]: With dead ends: 125645 [2020-10-14 09:37:47,487 INFO L226 Difference]: Without dead ends: 83343 [2020-10-14 09:37:47,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:37:47,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83343 states. [2020-10-14 09:37:54,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83343 to 83341. [2020-10-14 09:37:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83341 states. [2020-10-14 09:37:54,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83341 states to 83341 states and 132720 transitions. [2020-10-14 09:37:54,172 INFO L78 Accepts]: Start accepts. Automaton has 83341 states and 132720 transitions. Word has length 138 [2020-10-14 09:37:54,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:37:54,173 INFO L479 AbstractCegarLoop]: Abstraction has 83341 states and 132720 transitions. [2020-10-14 09:37:54,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:37:54,173 INFO L276 IsEmpty]: Start isEmpty. Operand 83341 states and 132720 transitions. [2020-10-14 09:37:54,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 09:37:54,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:54,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:37:54,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:37:54,184 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:54,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:54,185 INFO L82 PathProgramCache]: Analyzing trace with hash 913510756, now seen corresponding path program 1 times [2020-10-14 09:37:54,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:54,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388916392] [2020-10-14 09:37:54,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:54,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:54,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:54,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:54,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:54,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:54,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:54,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:55,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:55,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:55,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:59,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:59,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 09:37:59,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:37:59,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 09:37:59,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:59,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:59,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:37:59,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-14 09:37:59,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 09:37:59,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:59,611 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:37:59,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:59,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:59,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:59,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:59,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:59,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:37:59,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:59,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:59,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:59,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:59,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:59,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:59,647 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 09:37:59,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388916392] [2020-10-14 09:37:59,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:59,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:37:59,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793552583] [2020-10-14 09:37:59,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:37:59,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:59,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:37:59,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:59,649 INFO L87 Difference]: Start difference. First operand 83341 states and 132720 transitions. Second operand 4 states. [2020-10-14 09:38:00,034 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:38:07,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:38:07,934 INFO L93 Difference]: Finished difference Result 158385 states and 253458 transitions. [2020-10-14 09:38:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:38:07,934 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-10-14 09:38:07,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:38:08,068 INFO L225 Difference]: With dead ends: 158385 [2020-10-14 09:38:08,069 INFO L226 Difference]: Without dead ends: 105007 [2020-10-14 09:38:08,117 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 09:38:08,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105007 states. [2020-10-14 09:38:15,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105007 to 105005. [2020-10-14 09:38:15,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105005 states. [2020-10-14 09:38:15,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105005 states to 105005 states and 167280 transitions. [2020-10-14 09:38:15,982 INFO L78 Accepts]: Start accepts. Automaton has 105005 states and 167280 transitions. Word has length 139 [2020-10-14 09:38:15,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:38:15,983 INFO L479 AbstractCegarLoop]: Abstraction has 105005 states and 167280 transitions. [2020-10-14 09:38:15,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:38:15,983 INFO L276 IsEmpty]: Start isEmpty. Operand 105005 states and 167280 transitions. [2020-10-14 09:38:15,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 09:38:15,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:38:15,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:38:15,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:38:15,989 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:38:15,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:38:15,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1283293140, now seen corresponding path program 1 times [2020-10-14 09:38:15,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:38:15,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319835131] [2020-10-14 09:38:15,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:38:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:16,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:16,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:16,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:16,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:16,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:16,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:16,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:17,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:21,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:21,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 09:38:21,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:38:21,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 09:38:21,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:21,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:21,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:38:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:38:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 09:38:21,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:21,440 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:38:21,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:38:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:21,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:21,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:21,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:38:21,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:38:21,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:38:21,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:21,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:21,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:38:21,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:38:21,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:38:21,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:21,488 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 09:38:21,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319835131] [2020-10-14 09:38:21,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:38:21,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:38:21,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495176218] [2020-10-14 09:38:21,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:38:21,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:38:21,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:38:21,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:38:21,490 INFO L87 Difference]: Start difference. First operand 105005 states and 167280 transitions. Second operand 4 states. [2020-10-14 09:38:35,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:38:35,561 INFO L93 Difference]: Finished difference Result 308389 states and 490924 transitions. [2020-10-14 09:38:35,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:38:35,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2020-10-14 09:38:35,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:38:35,840 INFO L225 Difference]: With dead ends: 308389 [2020-10-14 09:38:35,841 INFO L226 Difference]: Without dead ends: 204204 [2020-10-14 09:38:35,926 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 09:38:36,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204204 states. [2020-10-14 09:38:49,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204204 to 204195. [2020-10-14 09:38:49,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204195 states. [2020-10-14 09:38:53,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204195 states to 204195 states and 323443 transitions. [2020-10-14 09:38:53,149 INFO L78 Accepts]: Start accepts. Automaton has 204195 states and 323443 transitions. Word has length 140 [2020-10-14 09:38:53,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:38:53,150 INFO L479 AbstractCegarLoop]: Abstraction has 204195 states and 323443 transitions. [2020-10-14 09:38:53,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:38:53,150 INFO L276 IsEmpty]: Start isEmpty. Operand 204195 states and 323443 transitions. [2020-10-14 09:38:53,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 09:38:53,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:38:53,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:38:53,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:38:53,162 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:38:53,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:38:53,162 INFO L82 PathProgramCache]: Analyzing trace with hash -587182631, now seen corresponding path program 1 times [2020-10-14 09:38:53,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:38:53,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311340685] [2020-10-14 09:38:53,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:38:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:53,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:53,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:53,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:53,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:53,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:53,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:53,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:56,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:56,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:58,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:58,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 09:38:58,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:38:58,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:38:58,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:58,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:38:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 09:38:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 09:38:58,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:58,554 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:38:58,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:38:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:58,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:58,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:58,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:38:58,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:38:58,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:38:58,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:58,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:58,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:38:58,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:38:58,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:38:58,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:58,589 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 09:38:58,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311340685] [2020-10-14 09:38:58,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:38:58,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:38:58,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145163521] [2020-10-14 09:38:58,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:38:58,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:38:58,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:38:58,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:38:58,591 INFO L87 Difference]: Start difference. First operand 204195 states and 323443 transitions. Second operand 4 states.