/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:58:30,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:58:30,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:58:30,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:58:30,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:58:30,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:58:30,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:58:30,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:58:30,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:58:30,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:58:30,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:58:30,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:58:30,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:58:30,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:58:30,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:58:30,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:58:30,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:58:30,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:58:30,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:58:30,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:58:30,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:58:30,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:58:30,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:58:30,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:58:30,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:58:30,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:58:30,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:58:30,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:58:30,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:58:30,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:58:30,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:58:30,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:58:30,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:58:30,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:58:30,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:58:30,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:58:30,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:58:30,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:58:30,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:58:30,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:58:30,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:58:30,373 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 08:58:30,409 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:58:30,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:58:30,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:58:30,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:58:30,411 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:58:30,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:58:30,411 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:58:30,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:58:30,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:58:30,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:58:30,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:58:30,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:58:30,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:58:30,414 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:58:30,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:58:30,414 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:58:30,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:58:30,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:58:30,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:58:30,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:58:30,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:58:30,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:58:30,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:58:30,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:58:30,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:58:30,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:58:30,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:58:30,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:58:30,416 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:58:30,417 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 08:58:30,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:58:30,780 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:58:30,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:58:30,788 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:58:30,789 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:58:30,789 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2020-10-14 08:58:30,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acf7e6c01/2e38374761154763b225d2db48b8524e/FLAGbca5af5b5 [2020-10-14 08:58:31,332 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:58:31,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2020-10-14 08:58:31,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acf7e6c01/2e38374761154763b225d2db48b8524e/FLAGbca5af5b5 [2020-10-14 08:58:31,627 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acf7e6c01/2e38374761154763b225d2db48b8524e [2020-10-14 08:58:31,634 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:58:31,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:58:31,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:58:31,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:58:31,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:58:31,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:58:31" (1/1) ... [2020-10-14 08:58:31,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15d64021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:31, skipping insertion in model container [2020-10-14 08:58:31,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:58:31" (1/1) ... [2020-10-14 08:58:31,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:58:31,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:58:31,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:58:31,998 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:58:32,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:58:32,197 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:58:32,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:32 WrapperNode [2020-10-14 08:58:32,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:58:32,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:58:32,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:58:32,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:58:32,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:32" (1/1) ... [2020-10-14 08:58:32,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:32" (1/1) ... [2020-10-14 08:58:32,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:32" (1/1) ... [2020-10-14 08:58:32,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:32" (1/1) ... [2020-10-14 08:58:32,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:32" (1/1) ... [2020-10-14 08:58:32,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:32" (1/1) ... [2020-10-14 08:58:32,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:32" (1/1) ... [2020-10-14 08:58:32,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:58:32,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:58:32,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:58:32,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:58:32,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:32" (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 08:58:32,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:58:32,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:58:32,320 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:58:32,320 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:58:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:58:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:58:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:58:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:58:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:58:32,321 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:58:32,321 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:58:32,325 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:58:32,325 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:58:32,325 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:58:32,326 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:58:32,326 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:58:32,326 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 08:58:32,327 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-14 08:58:32,327 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-14 08:58:32,327 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:58:32,327 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:58:32,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:58:32,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:58:32,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:58:33,109 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:58:33,109 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:58:33,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:58:33 BoogieIcfgContainer [2020-10-14 08:58:33,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:58:33,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:58:33,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:58:33,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:58:33,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:58:31" (1/3) ... [2020-10-14 08:58:33,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1811f52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:58:33, skipping insertion in model container [2020-10-14 08:58:33,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:58:32" (2/3) ... [2020-10-14 08:58:33,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1811f52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:58:33, skipping insertion in model container [2020-10-14 08:58:33,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:58:33" (3/3) ... [2020-10-14 08:58:33,123 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2020-10-14 08:58:33,134 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:58:33,142 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:58:33,156 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:58:33,178 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:58:33,178 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:58:33,178 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:58:33,178 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:58:33,178 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:58:33,179 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:58:33,179 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:58:33,179 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:58:33,201 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states. [2020-10-14 08:58:33,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 08:58:33,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:33,216 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] [2020-10-14 08:58:33,217 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:33,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:33,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1460335277, now seen corresponding path program 1 times [2020-10-14 08:58:33,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:33,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116853446] [2020-10-14 08:58:33,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:33,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:33,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:33,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:34,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:34,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:34,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:37,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:37,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:38,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:38,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 08:58:38,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:58:38,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 08:58:38,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:38,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:38,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:58:38,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 08:58:38,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 08:58:38,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 08:58:39,001 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 08:58:39,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:39,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:39,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:39,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:39,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:39,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 08:58:39,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:39,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:39,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:58:39,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:39,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:58:39,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:58:39,078 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 08:58:39,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116853446] [2020-10-14 08:58:39,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:39,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:58:39,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575831438] [2020-10-14 08:58:39,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:58:39,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:39,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:58:39,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:58:39,116 INFO L87 Difference]: Start difference. First operand 141 states. Second operand 4 states. [2020-10-14 08:58:39,510 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 08:58:40,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:40,588 INFO L93 Difference]: Finished difference Result 301 states and 491 transitions. [2020-10-14 08:58:40,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:58:40,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-10-14 08:58:40,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:40,610 INFO L225 Difference]: With dead ends: 301 [2020-10-14 08:58:40,611 INFO L226 Difference]: Without dead ends: 209 [2020-10-14 08:58:40,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:58:40,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-14 08:58:40,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 207. [2020-10-14 08:58:40,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-14 08:58:40,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 296 transitions. [2020-10-14 08:58:40,701 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 296 transitions. Word has length 90 [2020-10-14 08:58:40,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:40,702 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 296 transitions. [2020-10-14 08:58:40,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:58:40,702 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 296 transitions. [2020-10-14 08:58:40,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 08:58:40,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:40,706 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] [2020-10-14 08:58:40,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:58:40,707 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:40,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:40,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1542698315, now seen corresponding path program 1 times [2020-10-14 08:58:40,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:40,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142693543] [2020-10-14 08:58:40,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:40,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:40,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:40,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:41,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:41,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:41,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:43,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:45,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:45,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 08:58:45,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:58:45,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:58:45,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:45,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:45,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:58:45,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 08:58:45,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 08:58:45,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:58:46,062 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 08:58:46,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:46,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:46,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:46,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:46,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:46,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:58:46,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:46,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:46,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:58:46,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:46,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:58:46,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:58:46,106 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 08:58:46,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142693543] [2020-10-14 08:58:46,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:46,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:58:46,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805634823] [2020-10-14 08:58:46,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:58:46,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:46,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:58:46,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:58:46,111 INFO L87 Difference]: Start difference. First operand 207 states and 296 transitions. Second operand 4 states. [2020-10-14 08:58:46,415 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 08:58:47,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:47,084 INFO L93 Difference]: Finished difference Result 491 states and 748 transitions. [2020-10-14 08:58:47,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:58:47,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-10-14 08:58:47,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:47,094 INFO L225 Difference]: With dead ends: 491 [2020-10-14 08:58:47,094 INFO L226 Difference]: Without dead ends: 341 [2020-10-14 08:58:47,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:58:47,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-14 08:58:47,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 339. [2020-10-14 08:58:47,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-10-14 08:58:47,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 506 transitions. [2020-10-14 08:58:47,143 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 506 transitions. Word has length 91 [2020-10-14 08:58:47,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:47,144 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 506 transitions. [2020-10-14 08:58:47,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:58:47,144 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 506 transitions. [2020-10-14 08:58:47,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 08:58:47,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:47,146 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] [2020-10-14 08:58:47,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:58:47,146 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:47,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:47,149 INFO L82 PathProgramCache]: Analyzing trace with hash 507495471, now seen corresponding path program 1 times [2020-10-14 08:58:47,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:47,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842797314] [2020-10-14 08:58:47,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:47,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:47,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:47,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:47,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:47,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:48,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:52,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:52,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 08:58:52,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:58:52,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 08:58:52,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:52,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:52,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:58:52,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 08:58:52,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 08:58:52,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:58:52,435 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 08:58:52,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:52,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:52,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:52,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:52,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:52,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:58:52,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:52,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:58:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:52,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:58:52,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:58:52,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:52,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842797314] [2020-10-14 08:58:52,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:52,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:58:52,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128927976] [2020-10-14 08:58:52,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:58:52,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:52,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:58:52,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:58:52,479 INFO L87 Difference]: Start difference. First operand 339 states and 506 transitions. Second operand 4 states. [2020-10-14 08:58:52,709 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 08:58:53,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:53,326 INFO L93 Difference]: Finished difference Result 871 states and 1352 transitions. [2020-10-14 08:58:53,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:58:53,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-10-14 08:58:53,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:53,334 INFO L225 Difference]: With dead ends: 871 [2020-10-14 08:58:53,334 INFO L226 Difference]: Without dead ends: 589 [2020-10-14 08:58:53,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:58:53,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-10-14 08:58:53,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 587. [2020-10-14 08:58:53,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2020-10-14 08:58:53,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 898 transitions. [2020-10-14 08:58:53,417 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 898 transitions. Word has length 92 [2020-10-14 08:58:53,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:53,418 INFO L479 AbstractCegarLoop]: Abstraction has 587 states and 898 transitions. [2020-10-14 08:58:53,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:58:53,423 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 898 transitions. [2020-10-14 08:58:53,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 08:58:53,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:53,424 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] [2020-10-14 08:58:53,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:58:53,425 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:53,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:53,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1310684607, now seen corresponding path program 1 times [2020-10-14 08:58:53,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:53,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266171309] [2020-10-14 08:58:53,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:53,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:53,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:53,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:53,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:54,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:56,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:56,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 08:58:56,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:58:56,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3445 [2020-10-14 08:58:56,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:56,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:56,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:58:56,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 08:58:56,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 08:58:56,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:57,220 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 08:58:57,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:57,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:57,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:57,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:57,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:57,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:58:57,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:57,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:57,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:58:57,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:57,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:58:57,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:58:57,283 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 08:58:57,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266171309] [2020-10-14 08:58:57,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:57,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:58:57,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330738353] [2020-10-14 08:58:57,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:58:57,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:57,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:58:57,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:58:57,286 INFO L87 Difference]: Start difference. First operand 587 states and 898 transitions. Second operand 4 states. [2020-10-14 08:58:57,624 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 08:58:58,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:58,438 INFO L93 Difference]: Finished difference Result 1583 states and 2476 transitions. [2020-10-14 08:58:58,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:58:58,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2020-10-14 08:58:58,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:58,455 INFO L225 Difference]: With dead ends: 1583 [2020-10-14 08:58:58,455 INFO L226 Difference]: Without dead ends: 1053 [2020-10-14 08:58:58,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:58:58,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2020-10-14 08:58:58,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1051. [2020-10-14 08:58:58,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2020-10-14 08:58:58,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1626 transitions. [2020-10-14 08:58:58,517 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1626 transitions. Word has length 93 [2020-10-14 08:58:58,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:58,518 INFO L479 AbstractCegarLoop]: Abstraction has 1051 states and 1626 transitions. [2020-10-14 08:58:58,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:58:58,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1626 transitions. [2020-10-14 08:58:58,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 08:58:58,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:58,520 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] [2020-10-14 08:58:58,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:58:58,520 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:58,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:58,520 INFO L82 PathProgramCache]: Analyzing trace with hash -454565625, now seen corresponding path program 1 times [2020-10-14 08:58:58,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:58,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460238964] [2020-10-14 08:58:58,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:58,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:58,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:58,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:58,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:59,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:03,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:03,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 08:59:03,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:59:03,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4976 [2020-10-14 08:59:03,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:03,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:59:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 08:59:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 08:59:03,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:03,762 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 08:59:03,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:03,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:03,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:03,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:03,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:59:03,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:03,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:59:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:59:03,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:59:03,801 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 08:59:03,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460238964] [2020-10-14 08:59:03,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:03,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:59:03,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883908955] [2020-10-14 08:59:03,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:59:03,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:03,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:59:03,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:59:03,803 INFO L87 Difference]: Start difference. First operand 1051 states and 1626 transitions. Second operand 4 states. [2020-10-14 08:59:04,031 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 08:59:04,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:59:04,759 INFO L93 Difference]: Finished difference Result 2911 states and 4556 transitions. [2020-10-14 08:59:04,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:59:04,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-10-14 08:59:04,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:59:04,771 INFO L225 Difference]: With dead ends: 2911 [2020-10-14 08:59:04,771 INFO L226 Difference]: Without dead ends: 1917 [2020-10-14 08:59:04,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:59:04,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2020-10-14 08:59:04,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1915. [2020-10-14 08:59:04,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1915 states. [2020-10-14 08:59:04,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2970 transitions. [2020-10-14 08:59:04,869 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2970 transitions. Word has length 94 [2020-10-14 08:59:04,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:59:04,869 INFO L479 AbstractCegarLoop]: Abstraction has 1915 states and 2970 transitions. [2020-10-14 08:59:04,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:59:04,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2970 transitions. [2020-10-14 08:59:04,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 08:59:04,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:04,871 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] [2020-10-14 08:59:04,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:59:04,872 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:04,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:04,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1787333693, now seen corresponding path program 1 times [2020-10-14 08:59:04,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:04,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044153092] [2020-10-14 08:59:04,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:04,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:04,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:04,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:05,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:05,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:07,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:09,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:09,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 08:59:09,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:59:09,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:59:09,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:09,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:09,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:59:09,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 08:59:09,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 08:59:09,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:10,121 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 08:59:10,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:10,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:10,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:10,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:10,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:10,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:59:10,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:10,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:10,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:59:10,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:10,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:59:10,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:10,155 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 08:59:10,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044153092] [2020-10-14 08:59:10,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:10,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:59:10,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348913027] [2020-10-14 08:59:10,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:59:10,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:10,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:59:10,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:59:10,158 INFO L87 Difference]: Start difference. First operand 1915 states and 2970 transitions. Second operand 4 states. [2020-10-14 08:59:10,380 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 08:59:11,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:59:11,156 INFO L93 Difference]: Finished difference Result 5375 states and 8380 transitions. [2020-10-14 08:59:11,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:59:11,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-10-14 08:59:11,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:59:11,180 INFO L225 Difference]: With dead ends: 5375 [2020-10-14 08:59:11,181 INFO L226 Difference]: Without dead ends: 3517 [2020-10-14 08:59:11,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:59:11,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3517 states. [2020-10-14 08:59:11,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3517 to 3515. [2020-10-14 08:59:11,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3515 states. [2020-10-14 08:59:11,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3515 states to 3515 states and 5434 transitions. [2020-10-14 08:59:11,380 INFO L78 Accepts]: Start accepts. Automaton has 3515 states and 5434 transitions. Word has length 95 [2020-10-14 08:59:11,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:59:11,380 INFO L479 AbstractCegarLoop]: Abstraction has 3515 states and 5434 transitions. [2020-10-14 08:59:11,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:59:11,380 INFO L276 IsEmpty]: Start isEmpty. Operand 3515 states and 5434 transitions. [2020-10-14 08:59:11,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 08:59:11,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:11,382 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] [2020-10-14 08:59:11,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:59:11,382 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:11,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:11,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1447489406, now seen corresponding path program 1 times [2020-10-14 08:59:11,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:11,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988676017] [2020-10-14 08:59:11,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:11,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:11,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:11,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:11,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:11,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:11,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:12,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:16,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:16,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 08:59:16,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:59:16,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:59:16,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:16,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:16,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:59:16,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 08:59:16,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 08:59:16,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:59:16,657 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 08:59:16,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:16,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:16,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:16,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:16,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:16,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:59:16,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:16,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:16,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:59:16,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:16,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:59:16,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:59:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:59:16,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988676017] [2020-10-14 08:59:16,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:16,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:59:16,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870503514] [2020-10-14 08:59:16,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:59:16,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:16,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:59:16,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:59:16,704 INFO L87 Difference]: Start difference. First operand 3515 states and 5434 transitions. Second operand 4 states. [2020-10-14 08:59:16,919 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 08:59:17,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:59:17,787 INFO L93 Difference]: Finished difference Result 9919 states and 15356 transitions. [2020-10-14 08:59:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:59:17,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2020-10-14 08:59:17,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:59:17,818 INFO L225 Difference]: With dead ends: 9919 [2020-10-14 08:59:17,818 INFO L226 Difference]: Without dead ends: 6461 [2020-10-14 08:59:17,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:59:17,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6461 states. [2020-10-14 08:59:18,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6461 to 6459. [2020-10-14 08:59:18,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6459 states. [2020-10-14 08:59:18,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6459 states to 6459 states and 9914 transitions. [2020-10-14 08:59:18,129 INFO L78 Accepts]: Start accepts. Automaton has 6459 states and 9914 transitions. Word has length 96 [2020-10-14 08:59:18,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:59:18,129 INFO L479 AbstractCegarLoop]: Abstraction has 6459 states and 9914 transitions. [2020-10-14 08:59:18,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:59:18,130 INFO L276 IsEmpty]: Start isEmpty. Operand 6459 states and 9914 transitions. [2020-10-14 08:59:18,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 08:59:18,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:18,133 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] [2020-10-14 08:59:18,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:59:18,134 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:18,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:18,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1181901600, now seen corresponding path program 1 times [2020-10-14 08:59:18,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:18,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156669946] [2020-10-14 08:59:18,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:18,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:18,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:18,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:18,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:18,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:18,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:18,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:21,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:21,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:21,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:21,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:23,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:23,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 08:59:23,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:59:23,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:59:23,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:23,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:59:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:59:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 08:59:23,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:23,433 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 08:59:23,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:23,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:23,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:23,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:23,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:23,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 08:59:23,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:23,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:23,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:59:23,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:23,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:59:23,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:59:23,489 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 08:59:23,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156669946] [2020-10-14 08:59:23,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:23,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:59:23,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170937220] [2020-10-14 08:59:23,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:59:23,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:23,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:59:23,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:59:23,492 INFO L87 Difference]: Start difference. First operand 6459 states and 9914 transitions. Second operand 6 states. [2020-10-14 08:59:23,749 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:59:24,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:59:24,745 INFO L93 Difference]: Finished difference Result 19199 states and 29500 transitions. [2020-10-14 08:59:24,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:59:24,746 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-14 08:59:24,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:59:24,808 INFO L225 Difference]: With dead ends: 19199 [2020-10-14 08:59:24,808 INFO L226 Difference]: Without dead ends: 12797 [2020-10-14 08:59:24,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:59:24,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12797 states. [2020-10-14 08:59:25,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12797 to 12795. [2020-10-14 08:59:25,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12795 states. [2020-10-14 08:59:25,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12795 states to 12795 states and 19578 transitions. [2020-10-14 08:59:25,403 INFO L78 Accepts]: Start accepts. Automaton has 12795 states and 19578 transitions. Word has length 97 [2020-10-14 08:59:25,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:59:25,403 INFO L479 AbstractCegarLoop]: Abstraction has 12795 states and 19578 transitions. [2020-10-14 08:59:25,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:59:25,403 INFO L276 IsEmpty]: Start isEmpty. Operand 12795 states and 19578 transitions. [2020-10-14 08:59:25,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 08:59:25,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:25,404 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] [2020-10-14 08:59:25,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:59:25,405 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:25,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:25,405 INFO L82 PathProgramCache]: Analyzing trace with hash -660128933, now seen corresponding path program 1 times [2020-10-14 08:59:25,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:25,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189387914] [2020-10-14 08:59:25,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:25,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:25,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:25,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:25,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:25,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:26,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:26,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:30,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:30,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 08:59:30,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:59:30,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:59:30,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:30,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:59:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:59:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 08:59:30,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:30,663 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 08:59:30,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:30,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:30,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:30,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:30,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:30,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:59:30,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:30,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:30,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:59:30,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:30,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:59:30,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:59:30,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189387914] [2020-10-14 08:59:30,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:30,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:59:30,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83529659] [2020-10-14 08:59:30,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:59:30,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:30,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:59:30,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:59:30,703 INFO L87 Difference]: Start difference. First operand 12795 states and 19578 transitions. Second operand 6 states. [2020-10-14 08:59:30,984 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-14 08:59:32,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:59:32,226 INFO L93 Difference]: Finished difference Result 38143 states and 58364 transitions. [2020-10-14 08:59:32,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:59:32,226 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-14 08:59:32,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:59:32,287 INFO L225 Difference]: With dead ends: 38143 [2020-10-14 08:59:32,287 INFO L226 Difference]: Without dead ends: 25405 [2020-10-14 08:59:32,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:59:32,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25405 states. [2020-10-14 08:59:33,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25405 to 25403. [2020-10-14 08:59:33,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25403 states. [2020-10-14 08:59:33,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25403 states to 25403 states and 38714 transitions. [2020-10-14 08:59:33,977 INFO L78 Accepts]: Start accepts. Automaton has 25403 states and 38714 transitions. Word has length 97 [2020-10-14 08:59:33,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:59:33,978 INFO L479 AbstractCegarLoop]: Abstraction has 25403 states and 38714 transitions. [2020-10-14 08:59:33,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:59:33,978 INFO L276 IsEmpty]: Start isEmpty. Operand 25403 states and 38714 transitions. [2020-10-14 08:59:33,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 08:59:33,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:33,979 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] [2020-10-14 08:59:33,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:59:33,979 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:33,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:33,979 INFO L82 PathProgramCache]: Analyzing trace with hash -2124200490, now seen corresponding path program 1 times [2020-10-14 08:59:33,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:33,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274857644] [2020-10-14 08:59:33,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:34,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:34,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:34,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:34,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:38,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:38,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 08:59:38,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:59:38,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4104 [2020-10-14 08:59:38,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:38,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:38,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:59:38,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:59:38,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 08:59:38,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:38,341 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 08:59:38,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:38,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:38,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:38,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:38,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:38,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:59:38,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:38,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:38,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:59:38,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:38,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:59:38,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:38,378 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 08:59:38,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274857644] [2020-10-14 08:59:38,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:38,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:59:38,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020444515] [2020-10-14 08:59:38,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:59:38,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:38,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:59:38,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:59:38,380 INFO L87 Difference]: Start difference. First operand 25403 states and 38714 transitions. Second operand 6 states. [2020-10-14 08:59:38,622 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-14 08:59:40,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:59:40,640 INFO L93 Difference]: Finished difference Result 75839 states and 115516 transitions. [2020-10-14 08:59:40,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:59:40,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-14 08:59:40,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:59:40,728 INFO L225 Difference]: With dead ends: 75839 [2020-10-14 08:59:40,728 INFO L226 Difference]: Without dead ends: 50493 [2020-10-14 08:59:40,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:59:40,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50493 states. [2020-10-14 08:59:42,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50493 to 50491. [2020-10-14 08:59:42,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50491 states. [2020-10-14 08:59:42,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50491 states to 50491 states and 76602 transitions. [2020-10-14 08:59:42,810 INFO L78 Accepts]: Start accepts. Automaton has 50491 states and 76602 transitions. Word has length 97 [2020-10-14 08:59:42,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:59:42,810 INFO L479 AbstractCegarLoop]: Abstraction has 50491 states and 76602 transitions. [2020-10-14 08:59:42,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:59:42,810 INFO L276 IsEmpty]: Start isEmpty. Operand 50491 states and 76602 transitions. [2020-10-14 08:59:42,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 08:59:42,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:42,811 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] [2020-10-14 08:59:42,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:59:42,811 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:42,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:42,812 INFO L82 PathProgramCache]: Analyzing trace with hash -402869615, now seen corresponding path program 1 times [2020-10-14 08:59:42,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:42,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025664690] [2020-10-14 08:59:42,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:42,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:43,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:44,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:44,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 08:59:44,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 08:59:44,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1998 [2020-10-14 08:59:44,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:44,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:44,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:59:44,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:59:44,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 08:59:44,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:45,032 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 08:59:45,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:45,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:45,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:45,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:45,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:45,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:59:45,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:45,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:45,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:59:45,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:45,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:59:45,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:45,067 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 08:59:45,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025664690] [2020-10-14 08:59:45,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:45,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:59:45,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061315103] [2020-10-14 08:59:45,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:59:45,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:45,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:59:45,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:59:45,068 INFO L87 Difference]: Start difference. First operand 50491 states and 76602 transitions. Second operand 6 states. [2020-10-14 08:59:45,294 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:59:47,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:59:47,460 INFO L93 Difference]: Finished difference Result 100925 states and 153147 transitions. [2020-10-14 08:59:47,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:59:47,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-14 08:59:47,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:59:47,525 INFO L225 Difference]: With dead ends: 100925 [2020-10-14 08:59:47,526 INFO L226 Difference]: Without dead ends: 50491 [2020-10-14 08:59:47,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:59:47,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50491 states. [2020-10-14 08:59:49,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50491 to 50491. [2020-10-14 08:59:49,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50491 states. [2020-10-14 08:59:49,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50491 states to 50491 states and 76090 transitions. [2020-10-14 08:59:49,601 INFO L78 Accepts]: Start accepts. Automaton has 50491 states and 76090 transitions. Word has length 97 [2020-10-14 08:59:49,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:59:49,601 INFO L479 AbstractCegarLoop]: Abstraction has 50491 states and 76090 transitions. [2020-10-14 08:59:49,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:59:49,602 INFO L276 IsEmpty]: Start isEmpty. Operand 50491 states and 76090 transitions. [2020-10-14 08:59:49,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 08:59:49,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:49,603 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] [2020-10-14 08:59:49,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:59:49,603 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:49,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:49,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1132528310, now seen corresponding path program 1 times [2020-10-14 08:59:49,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:49,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603505800] [2020-10-14 08:59:49,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:49,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:49,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:49,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 08:59:49,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:49,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-14 08:59:49,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:49,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:59:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:59:49,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 08:59:49,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:50,356 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 08:59:50,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:50,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:50,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:50,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:50,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:50,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:59:50,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:50,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:50,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:59:50,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:50,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:59:50,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:50,387 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 08:59:50,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603505800] [2020-10-14 08:59:50,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:50,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:59:50,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122661283] [2020-10-14 08:59:50,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:59:50,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:50,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:59:50,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:59:50,389 INFO L87 Difference]: Start difference. First operand 50491 states and 76090 transitions. Second operand 10 states. [2020-10-14 08:59:50,660 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-14 09:00:24,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:00:24,504 INFO L93 Difference]: Finished difference Result 756567 states and 1140552 transitions. [2020-10-14 09:00:24,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 09:00:24,505 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 97 [2020-10-14 09:00:24,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:00:25,518 INFO L225 Difference]: With dead ends: 756567 [2020-10-14 09:00:25,519 INFO L226 Difference]: Without dead ends: 706133 [2020-10-14 09:00:25,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-14 09:00:26,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706133 states. [2020-10-14 09:00:41,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706133 to 100923. [2020-10-14 09:00:41,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100923 states. [2020-10-14 09:00:41,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100923 states to 100923 states and 150074 transitions. [2020-10-14 09:00:41,732 INFO L78 Accepts]: Start accepts. Automaton has 100923 states and 150074 transitions. Word has length 97 [2020-10-14 09:00:41,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:00:41,732 INFO L479 AbstractCegarLoop]: Abstraction has 100923 states and 150074 transitions. [2020-10-14 09:00:41,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 09:00:41,732 INFO L276 IsEmpty]: Start isEmpty. Operand 100923 states and 150074 transitions. [2020-10-14 09:00:41,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 09:00:41,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:00:41,733 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] [2020-10-14 09:00:41,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:00:41,734 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:00:41,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:00:41,734 INFO L82 PathProgramCache]: Analyzing trace with hash 839791089, now seen corresponding path program 1 times [2020-10-14 09:00:41,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:00:41,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443714555] [2020-10-14 09:00:41,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:00:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:41,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:41,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:41,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:41,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:41,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 09:00:41,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 09:00:41,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-14 09:00:41,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:41,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:41,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:00:41,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:00:41,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 09:00:41,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:42,175 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:00:42,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:00:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:42,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:42,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:42,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:00:42,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:00:42,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:00:42,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:42,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:42,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:00:42,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:00:42,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:00:42,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:42,200 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 09:00:42,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443714555] [2020-10-14 09:00:42,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:00:42,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:00:42,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333400369] [2020-10-14 09:00:42,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:00:42,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:00:42,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:00:42,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:00:42,202 INFO L87 Difference]: Start difference. First operand 100923 states and 150074 transitions. Second operand 4 states. [2020-10-14 09:00:42,416 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 09:00:55,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:00:55,233 INFO L93 Difference]: Finished difference Result 250689 states and 372030 transitions. [2020-10-14 09:00:55,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:00:55,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-14 09:00:55,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:00:55,408 INFO L225 Difference]: With dead ends: 250689 [2020-10-14 09:00:55,409 INFO L226 Difference]: Without dead ends: 149823 [2020-10-14 09:00:55,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:00:55,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149823 states. [2020-10-14 09:01:07,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149823 to 149821. [2020-10-14 09:01:07,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149821 states. [2020-10-14 09:01:07,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149821 states to 149821 states and 220476 transitions. [2020-10-14 09:01:07,466 INFO L78 Accepts]: Start accepts. Automaton has 149821 states and 220476 transitions. Word has length 99 [2020-10-14 09:01:07,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:01:07,467 INFO L479 AbstractCegarLoop]: Abstraction has 149821 states and 220476 transitions. [2020-10-14 09:01:07,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:01:07,467 INFO L276 IsEmpty]: Start isEmpty. Operand 149821 states and 220476 transitions. [2020-10-14 09:01:07,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 09:01:07,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:07,467 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] [2020-10-14 09:01:07,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:01:07,468 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:07,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:07,468 INFO L82 PathProgramCache]: Analyzing trace with hash 859840432, now seen corresponding path program 1 times [2020-10-14 09:01:07,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:07,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697164652] [2020-10-14 09:01:07,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:07,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:07,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:07,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 09:01:07,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:07,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-14 09:01:07,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:07,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:07,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 09:01:07,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 09:01:07,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 09:01:07,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:01:08,115 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:01:08,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:01:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:08,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:08,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:08,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:01:08,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:08,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:01:08,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:08,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:08,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:01:08,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:01:08,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:01:08,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:01:08,172 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 09:01:08,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697164652] [2020-10-14 09:01:08,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:01:08,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 09:01:08,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042908056] [2020-10-14 09:01:08,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 09:01:08,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:01:08,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 09:01:08,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:01:08,174 INFO L87 Difference]: Start difference. First operand 149821 states and 220476 transitions. Second operand 10 states. [2020-10-14 09:01:08,541 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 193