/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 SingleStatement --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=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:52:04,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:52:04,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:52:04,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:52:04,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:52:04,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:52:04,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:52:04,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:52:04,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:52:04,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:52:04,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:52:04,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:52:04,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:52:04,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:52:04,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:52:04,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:52:04,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:52:04,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:52:04,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:52:04,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:52:04,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:52:04,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:52:04,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:52:04,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:52:04,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:52:04,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:52:04,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:52:04,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:52:04,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:52:04,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:52:04,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:52:04,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:52:04,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:52:04,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:52:04,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:52:04,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:52:04,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:52:04,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:52:04,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:52:04,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:52:04,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:52:04,189 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 [2020-09-25 08:52:04,243 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:52:04,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:52:04,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:52:04,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:52:04,248 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:52:04,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:52:04,249 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:52:04,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:52:04,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:52:04,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:52:04,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:52:04,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:52:04,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:52:04,250 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:52:04,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:52:04,253 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:52:04,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:52:04,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:52:04,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:52:04,253 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:52:04,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:52:04,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:52:04,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:52:04,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:52:04,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:52:04,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:52:04,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:52:04,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:52:04,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:52:04,255 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 -> SingleStatement 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=1.0;log-additional-information=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=1.0;log-additional-information=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=1.0;log-additional-information=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=1.0;log-additional-information=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=1.0;log-additional-information=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=1.0;log-additional-information=true; [2020-09-25 08:52:04,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:52:04,793 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:52:04,797 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:52:04,798 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:52:04,799 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:52:04,800 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c [2020-09-25 08:52:04,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/359aa21b4/ed5b780bcc9e402c84fb36b3b6ae42dd/FLAGf67eaec88 [2020-09-25 08:52:05,445 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:52:05,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c [2020-09-25 08:52:05,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/359aa21b4/ed5b780bcc9e402c84fb36b3b6ae42dd/FLAGf67eaec88 [2020-09-25 08:52:05,781 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/359aa21b4/ed5b780bcc9e402c84fb36b3b6ae42dd [2020-09-25 08:52:05,794 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:52:05,800 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:52:05,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:52:05,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:52:05,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:52:05,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:52:05" (1/1) ... [2020-09-25 08:52:05,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d48d131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:05, skipping insertion in model container [2020-09-25 08:52:05,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:52:05" (1/1) ... [2020-09-25 08:52:05,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:52:05,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:52:06,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:52:06,177 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:52:06,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:52:06,338 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:52:06,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06 WrapperNode [2020-09-25 08:52:06,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:52:06,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:52:06,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:52:06,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:52:06,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:06,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:06,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:06,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:06,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:06,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:06,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:06,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:52:06,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:52:06,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:52:06,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:52:06,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (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 [2020-09-25 08:52:06,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:52:06,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:52:06,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 08:52:06,466 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-09-25 08:52:06,466 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-09-25 08:52:06,466 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-09-25 08:52:06,467 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:52:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:52:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 08:52:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 08:52:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 08:52:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-09-25 08:52:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-09-25 08:52:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-09-25 08:52:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:52:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:52:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:52:07,060 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:52:07,060 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 08:52:07,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:52:07 BoogieIcfgContainer [2020-09-25 08:52:07,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:52:07,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:52:07,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:52:07,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:52:07,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:52:05" (1/3) ... [2020-09-25 08:52:07,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2f83f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:52:07, skipping insertion in model container [2020-09-25 08:52:07,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (2/3) ... [2020-09-25 08:52:07,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2f83f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:52:07, skipping insertion in model container [2020-09-25 08:52:07,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:52:07" (3/3) ... [2020-09-25 08:52:07,077 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2020-09-25 08:52:07,089 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:52:07,099 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:52:07,122 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:52:07,152 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:52:07,152 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:52:07,153 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:52:07,153 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:52:07,153 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:52:07,153 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:52:07,153 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:52:07,153 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:52:07,178 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-09-25 08:52:07,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-25 08:52:07,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:07,193 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:07,194 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:07,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:07,201 INFO L82 PathProgramCache]: Analyzing trace with hash -2062280112, now seen corresponding path program 1 times [2020-09-25 08:52:07,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:07,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015873216] [2020-09-25 08:52:07,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:07,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:07,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:08,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:08,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:09,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:09,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 08:52:09,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:52:09,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1805 [2020-09-25 08:52:09,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:09,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:09,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:09,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-25 08:52:09,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 08:52:09,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:52:09,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:09,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:09,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:09,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:09,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:09,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:09,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:09,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:09,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:09,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:52:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:09,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:09,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:09,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:09,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:09,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:52:09,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:09,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:09,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:09,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:09,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:09,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 08:52:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:09,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:09,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:09,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:09,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:09,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:09,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 08:52:09,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:09,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:09,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:09,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:09,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:09,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:09,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 08:52:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:09,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:09,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:09,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:09,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:09,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:52:09,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:09,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:09,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:09,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:09,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:52:09,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 08:52:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:09,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:09,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:09,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:09,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:09,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:52:09,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:09,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:09,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:09,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:09,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:09,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:52:09,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 08:52:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:09,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:09,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:09,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 08:52:09,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:09,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:52:09,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:09,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:09,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:09,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:52:09,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 08:52:09,419 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-09-25 08:52:09,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015873216] [2020-09-25 08:52:09,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:52:09,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:52:09,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085414964] [2020-09-25 08:52:09,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:52:09,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:09,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:52:09,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:52:09,462 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 3 states. [2020-09-25 08:52:09,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:09,573 INFO L93 Difference]: Finished difference Result 253 states and 309 transitions. [2020-09-25 08:52:09,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:52:09,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-09-25 08:52:09,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:09,616 INFO L225 Difference]: With dead ends: 253 [2020-09-25 08:52:09,616 INFO L226 Difference]: Without dead ends: 126 [2020-09-25 08:52:09,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:52:09,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-25 08:52:09,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-09-25 08:52:09,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-25 08:52:09,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2020-09-25 08:52:09,733 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 100 [2020-09-25 08:52:09,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:09,747 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2020-09-25 08:52:09,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:52:09,747 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2020-09-25 08:52:09,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 08:52:09,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:09,759 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:09,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:52:09,760 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:09,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:09,761 INFO L82 PathProgramCache]: Analyzing trace with hash -2043535721, now seen corresponding path program 1 times [2020-09-25 08:52:09,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:09,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453220377] [2020-09-25 08:52:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:09,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:09,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:10,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:10,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:10,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:14,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:14,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 08:52:14,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:52:14,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 08:52:14,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:14,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:14,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:14,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 08:52:14,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 08:52:14,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:14,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:14,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:14,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:14,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:14,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:14,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:52:14,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:14,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:14,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:14,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:14,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:14,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:14,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:52:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:14,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:14,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:14,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:14,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:14,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:52:14,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:14,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:14,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:14,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:14,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:14,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:14,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 08:52:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:14,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:14,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:14,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:14,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:14,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:14,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 08:52:14,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:14,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:52:14,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:14,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 08:52:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:14,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:14,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:14,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:15,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:15,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:52:15,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:15,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:15,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:15,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:15,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:52:15,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:15,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 08:52:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:15,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:15,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:15,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:15,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:15,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 08:52:15,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:15,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:15,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:15,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:15,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:52:15,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:15,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 08:52:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:15,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:15,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:15,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 08:52:15,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:15,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:52:15,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:15,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:15,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:15,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:15,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:52:15,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-25 08:52:15,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453220377] [2020-09-25 08:52:15,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:15,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 08:52:15,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949248929] [2020-09-25 08:52:15,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:52:15,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:15,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:52:15,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:52:15,072 INFO L87 Difference]: Start difference. First operand 126 states and 144 transitions. Second operand 6 states. [2020-09-25 08:52:15,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:15,227 INFO L93 Difference]: Finished difference Result 161 states and 191 transitions. [2020-09-25 08:52:15,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:52:15,230 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-09-25 08:52:15,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:15,237 INFO L225 Difference]: With dead ends: 161 [2020-09-25 08:52:15,237 INFO L226 Difference]: Without dead ends: 155 [2020-09-25 08:52:15,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:52:15,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-25 08:52:15,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 150. [2020-09-25 08:52:15,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-09-25 08:52:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 179 transitions. [2020-09-25 08:52:15,277 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 179 transitions. Word has length 102 [2020-09-25 08:52:15,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:15,282 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 179 transitions. [2020-09-25 08:52:15,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:52:15,282 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 179 transitions. [2020-09-25 08:52:15,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 08:52:15,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:15,296 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:15,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:52:15,296 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:15,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:15,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1435857694, now seen corresponding path program 1 times [2020-09-25 08:52:15,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:15,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108994344] [2020-09-25 08:52:15,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:15,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:15,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:15,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:15,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:19,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 08:52:19,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:52:19,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3945 [2020-09-25 08:52:19,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:19,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:19,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:52:19,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-09-25 08:52:19,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 08:52:19,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:19,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:19,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:19,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:19,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:19,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:19,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:19,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:19,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:19,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:19,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:52:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:19,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:19,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:19,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:19,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:19,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:19,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:19,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:19,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 08:52:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:19,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:19,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:19,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:19,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:52:19,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:19,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:19,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:19,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:19,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:19,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:19,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 08:52:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:19,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:19,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:19,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:19,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:52:19,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:19,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:19,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:19,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:19,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:19,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:19,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 08:52:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:19,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:19,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:19,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:19,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:19,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:19,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:19,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:19,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:19,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:19,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:19,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 08:52:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:19,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:19,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 08:52:19,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:19,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:52:19,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:19,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:19,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:19,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:19,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:52:19,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:19,380 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-09-25 08:52:19,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108994344] [2020-09-25 08:52:19,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:52:19,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:52:19,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821607227] [2020-09-25 08:52:19,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:52:19,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:19,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:52:19,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:52:19,387 INFO L87 Difference]: Start difference. First operand 150 states and 179 transitions. Second operand 4 states. [2020-09-25 08:52:19,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:19,426 INFO L93 Difference]: Finished difference Result 172 states and 204 transitions. [2020-09-25 08:52:19,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:52:19,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-09-25 08:52:19,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:19,432 INFO L225 Difference]: With dead ends: 172 [2020-09-25 08:52:19,433 INFO L226 Difference]: Without dead ends: 148 [2020-09-25 08:52:19,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:52:19,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-09-25 08:52:19,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-09-25 08:52:19,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-09-25 08:52:19,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 175 transitions. [2020-09-25 08:52:19,461 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 175 transitions. Word has length 104 [2020-09-25 08:52:19,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:19,461 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 175 transitions. [2020-09-25 08:52:19,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:52:19,462 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 175 transitions. [2020-09-25 08:52:19,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 08:52:19,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:19,466 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:19,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:52:19,466 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:19,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:19,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1772761410, now seen corresponding path program 1 times [2020-09-25 08:52:19,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:19,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329746967] [2020-09-25 08:52:19,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:19,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:19,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 08:52:19,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:19,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-09-25 08:52:19,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:19,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:19,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:19,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 08:52:19,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:52:19,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:19,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:19,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:19,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:19,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:19,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:19,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:19,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:19,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:19,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:19,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:19,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:19,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:52:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:19,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:19,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:19,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:19,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:19,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:19,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:19,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:19,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:19,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:19,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:19,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 08:52:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:19,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:19,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:19,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:19,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 08:52:19,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:19,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:19,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:19,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:19,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:19,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:19,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 08:52:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:19,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:19,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:19,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:19,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:52:19,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:19,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:19,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:19,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 08:52:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:19,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:19,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:19,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:19,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:52:19,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:19,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:19,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:19,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:19,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:19,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:19,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 08:52:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:19,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:19,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 08:52:19,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:19,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:52:19,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:19,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:19,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:19,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:19,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 08:52:19,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:20,007 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-09-25 08:52:20,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329746967] [2020-09-25 08:52:20,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:52:20,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:52:20,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84697316] [2020-09-25 08:52:20,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:52:20,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:20,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:52:20,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:52:20,013 INFO L87 Difference]: Start difference. First operand 148 states and 175 transitions. Second operand 6 states. [2020-09-25 08:52:20,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:20,122 INFO L93 Difference]: Finished difference Result 171 states and 200 transitions. [2020-09-25 08:52:20,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:52:20,123 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-09-25 08:52:20,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:20,124 INFO L225 Difference]: With dead ends: 171 [2020-09-25 08:52:20,126 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 08:52:20,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:52:20,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 08:52:20,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2020-09-25 08:52:20,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-25 08:52:20,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 189 transitions. [2020-09-25 08:52:20,157 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 189 transitions. Word has length 104 [2020-09-25 08:52:20,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:20,157 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 189 transitions. [2020-09-25 08:52:20,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:52:20,158 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 189 transitions. [2020-09-25 08:52:20,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 08:52:20,160 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:20,160 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:20,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:52:20,161 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:20,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:20,161 INFO L82 PathProgramCache]: Analyzing trace with hash 975637086, now seen corresponding path program 1 times [2020-09-25 08:52:20,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:20,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721339321] [2020-09-25 08:52:20,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:20,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:20,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 08:52:20,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:20,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-25 08:52:20,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:20,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:20,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:20,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-09-25 08:52:20,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:52:20,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:20,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:20,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:20,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:20,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:20,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:20,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:20,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:20,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:20,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:20,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:52:20,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:52:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:20,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:20,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:20,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:20,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:20,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:20,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:20,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:20,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:20,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:20,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:20,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 08:52:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:20,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:20,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:20,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:20,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:52:20,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:20,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:20,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:20,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:20,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:20,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:20,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 08:52:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:20,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:20,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:20,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:20,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:20,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:20,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:20,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:20,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:20,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:20,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:20,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 08:52:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:20,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:20,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:20,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:20,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:20,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:20,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:20,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:20,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:20,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:20,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:20,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 08:52:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:20,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:20,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 08:52:20,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:20,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:20,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:20,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:20,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:20,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:20,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:20,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:20,501 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-09-25 08:52:20,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721339321] [2020-09-25 08:52:20,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:52:20,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:52:20,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907141125] [2020-09-25 08:52:20,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:52:20,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:20,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:52:20,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:52:20,504 INFO L87 Difference]: Start difference. First operand 160 states and 189 transitions. Second operand 6 states. [2020-09-25 08:52:20,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:20,556 INFO L93 Difference]: Finished difference Result 166 states and 194 transitions. [2020-09-25 08:52:20,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:52:20,557 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-09-25 08:52:20,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:20,559 INFO L225 Difference]: With dead ends: 166 [2020-09-25 08:52:20,563 INFO L226 Difference]: Without dead ends: 154 [2020-09-25 08:52:20,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:52:20,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-25 08:52:20,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-09-25 08:52:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-25 08:52:20,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 180 transitions. [2020-09-25 08:52:20,582 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 180 transitions. Word has length 104 [2020-09-25 08:52:20,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:20,583 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 180 transitions. [2020-09-25 08:52:20,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:52:20,583 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 180 transitions. [2020-09-25 08:52:20,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-25 08:52:20,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:20,585 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:20,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:52:20,586 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:20,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:20,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1339268403, now seen corresponding path program 1 times [2020-09-25 08:52:20,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:20,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002157774] [2020-09-25 08:52:20,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:20,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:24,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:25,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:25,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 08:52:25,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:52:25,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 08:52:25,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:25,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:25,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:52:25,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 08:52:25,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 08:52:25,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:25,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:25,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:25,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:25,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:25,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:25,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:52:25,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:25,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:25,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:25,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:25,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:25,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:25,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:52:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:25,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:25,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:25,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:25,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:25,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:25,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:25,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:52:25,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:52:25,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 08:52:25,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:25,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:25,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:25,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:25,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:25,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:25,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 08:52:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:25,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:25,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:25,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:25,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:25,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:25,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:52:25,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:25,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:25,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:25,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 08:52:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:25,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:25,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:25,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:25,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:25,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:52:25,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:25,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:25,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:25,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:25,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:25,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:25,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-25 08:52:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:25,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:25,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:25,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:25,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:25,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:52:25,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:25,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:25,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:25,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:25,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:52:25,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:25,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 08:52:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:25,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:25,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:25,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 08:52:25,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:52:25,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:25,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:52:25,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-25 08:52:25,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002157774] [2020-09-25 08:52:25,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:25,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:52:25,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421072629] [2020-09-25 08:52:25,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:52:25,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:25,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:52:25,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:52:25,844 INFO L87 Difference]: Start difference. First operand 154 states and 180 transitions. Second operand 7 states. [2020-09-25 08:52:25,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:25,970 INFO L93 Difference]: Finished difference Result 196 states and 229 transitions. [2020-09-25 08:52:25,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:52:25,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-09-25 08:52:25,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:25,973 INFO L225 Difference]: With dead ends: 196 [2020-09-25 08:52:25,974 INFO L226 Difference]: Without dead ends: 186 [2020-09-25 08:52:25,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:52:25,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-09-25 08:52:25,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 154. [2020-09-25 08:52:25,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-25 08:52:25,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 180 transitions. [2020-09-25 08:52:25,991 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 180 transitions. Word has length 106 [2020-09-25 08:52:25,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:25,993 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 180 transitions. [2020-09-25 08:52:25,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:52:25,993 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 180 transitions. [2020-09-25 08:52:25,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-25 08:52:25,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:25,998 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:25,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:52:25,999 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:25,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:25,999 INFO L82 PathProgramCache]: Analyzing trace with hash -723197393, now seen corresponding path program 2 times [2020-09-25 08:52:25,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:26,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717369964] [2020-09-25 08:52:26,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:26,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:26,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:26,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:26,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:26,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:27,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 08:52:27,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:52:27,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1355 [2020-09-25 08:52:27,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:27,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:52:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 08:52:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:52:27,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:27,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:27,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:27,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:27,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:27,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:27,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:27,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:27,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:27,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:52:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:27,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:27,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:52:27,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:52:27,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 08:52:27,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:27,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:27,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:52:27,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:52:27,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 08:52:27,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:27,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 08:52:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:27,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:27,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:27,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:27,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:52:27,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:27,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:27,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:27,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:52:27,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:27,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:27,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 08:52:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:27,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:27,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:52:27,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:27,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:52:27,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:27,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:27,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:27,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 08:52:27,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:27,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:27,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 08:52:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:27,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:27,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:27,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:27,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:27,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:27,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:27,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:27,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:52:27,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:27,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:27,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 08:52:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:27,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:27,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 08:52:27,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:27,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:52:27,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:27,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:27,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:27,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:52:27,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:27,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:27,559 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 08:52:27,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717369964] [2020-09-25 08:52:27,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:27,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 08:52:27,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193102416] [2020-09-25 08:52:27,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:52:27,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:27,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:52:27,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:52:27,564 INFO L87 Difference]: Start difference. First operand 154 states and 180 transitions. Second operand 4 states. [2020-09-25 08:52:29,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:29,858 INFO L93 Difference]: Finished difference Result 285 states and 338 transitions. [2020-09-25 08:52:29,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:52:29,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-09-25 08:52:29,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:29,860 INFO L225 Difference]: With dead ends: 285 [2020-09-25 08:52:29,860 INFO L226 Difference]: Without dead ends: 151 [2020-09-25 08:52:29,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:52:29,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-09-25 08:52:29,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 130. [2020-09-25 08:52:29,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-25 08:52:29,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 145 transitions. [2020-09-25 08:52:29,871 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 145 transitions. Word has length 110 [2020-09-25 08:52:29,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:29,871 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 145 transitions. [2020-09-25 08:52:29,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:52:29,871 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 145 transitions. [2020-09-25 08:52:29,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-09-25 08:52:29,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:29,873 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:29,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:52:29,873 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:29,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:29,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1200520394, now seen corresponding path program 1 times [2020-09-25 08:52:29,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:29,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092450564] [2020-09-25 08:52:29,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:29,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:29,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:29,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:29,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:34,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:34,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 08:52:34,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:52:34,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 08:52:34,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:34,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:34,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:52:34,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 08:52:34,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:52:34,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:34,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:34,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:34,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:34,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:34,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:34,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:34,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:34,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:34,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:34,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:34,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:34,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:34,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:52:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:34,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:34,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:34,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:34,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:34,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:34,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:34,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:34,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:34,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 08:52:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:34,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:34,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:34,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:34,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:34,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:52:34,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:34,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:34,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:52:34,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:52:34,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:52:34,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:34,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 08:52:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:34,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:34,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:34,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:34,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:34,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:52:34,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:34,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:34,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:52:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:34,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:34,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 08:52:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:34,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:34,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:34,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:34,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:34,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:34,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:34,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:34,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:34,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:52:34,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:34,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:35,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 08:52:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:35,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:35,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:35,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:52:35,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:35,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 08:52:35,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:35,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:35,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:35,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 08:52:35,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:35,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:35,052 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 08:52:35,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092450564] [2020-09-25 08:52:35,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:35,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 08:52:35,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963854863] [2020-09-25 08:52:35,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:52:35,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:35,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:52:35,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:52:35,055 INFO L87 Difference]: Start difference. First operand 130 states and 145 transitions. Second operand 4 states. [2020-09-25 08:52:35,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:35,166 INFO L93 Difference]: Finished difference Result 267 states and 308 transitions. [2020-09-25 08:52:35,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:52:35,167 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-09-25 08:52:35,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:35,169 INFO L225 Difference]: With dead ends: 267 [2020-09-25 08:52:35,169 INFO L226 Difference]: Without dead ends: 158 [2020-09-25 08:52:35,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:52:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-25 08:52:35,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 140. [2020-09-25 08:52:35,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-25 08:52:35,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 155 transitions. [2020-09-25 08:52:35,207 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 155 transitions. Word has length 113 [2020-09-25 08:52:35,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:35,207 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 155 transitions. [2020-09-25 08:52:35,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:52:35,207 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 155 transitions. [2020-09-25 08:52:35,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 08:52:35,209 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:35,209 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:35,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:52:35,210 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:35,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:35,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1827262605, now seen corresponding path program 1 times [2020-09-25 08:52:35,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:35,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682028571] [2020-09-25 08:52:35,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:35,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:35,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:35,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:35,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:40,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 08:52:40,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:52:40,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 08:52:40,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:40,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:40,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:52:40,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 08:52:40,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:40,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:40,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:40,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:40,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:40,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:40,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:40,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:40,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:40,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:40,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:40,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:40,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:40,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:52:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:40,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:40,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:40,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:40,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:40,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:40,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:40,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:40,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:40,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:40,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:40,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 08:52:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:40,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:40,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 08:52:40,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:40,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 08:52:40,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:40,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:40,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:52:40,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 08:52:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 08:52:40,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:40,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 08:52:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:40,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:40,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:40,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:40,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:40,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:40,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:52:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:40,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:40,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 08:52:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:40,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:40,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:40,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:40,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:52:40,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:40,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:40,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:40,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:52:40,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:40,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:40,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 08:52:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:40,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:40,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:52:40,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:40,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 08:52:40,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:40,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:40,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:40,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 08:52:40,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:40,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:40,368 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 08:52:40,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682028571] [2020-09-25 08:52:40,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:40,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 08:52:40,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756570282] [2020-09-25 08:52:40,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:52:40,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:40,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:52:40,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:52:40,371 INFO L87 Difference]: Start difference. First operand 140 states and 155 transitions. Second operand 4 states. [2020-09-25 08:52:40,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:40,467 INFO L93 Difference]: Finished difference Result 249 states and 280 transitions. [2020-09-25 08:52:40,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:52:40,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-09-25 08:52:40,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:40,471 INFO L225 Difference]: With dead ends: 249 [2020-09-25 08:52:40,471 INFO L226 Difference]: Without dead ends: 147 [2020-09-25 08:52:40,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:52:40,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-09-25 08:52:40,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2020-09-25 08:52:40,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-09-25 08:52:40,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 159 transitions. [2020-09-25 08:52:40,486 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 159 transitions. Word has length 116 [2020-09-25 08:52:40,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:40,486 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 159 transitions. [2020-09-25 08:52:40,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:52:40,487 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 159 transitions. [2020-09-25 08:52:40,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 08:52:40,489 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:40,489 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:40,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:52:40,489 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:40,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:40,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1607884437, now seen corresponding path program 1 times [2020-09-25 08:52:40,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:40,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016269123] [2020-09-25 08:52:40,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:40,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:45,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 08:52:45,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:52:45,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 08:52:45,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:45,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:45,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:52:45,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 08:52:45,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 08:52:45,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:45,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:45,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:45,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:45,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:45,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:45,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:45,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:45,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:45,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:45,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:45,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:45,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:52:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:45,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:45,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:45,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:45,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:45,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:45,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:45,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:45,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:45,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:45,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:45,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 08:52:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:45,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:45,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 08:52:45,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:45,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 08:52:45,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:45,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:45,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:45,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:45,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:45,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:45,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 08:52:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:45,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:45,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:45,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:45,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:52:45,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:45,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:45,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:45,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:45,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:45,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:45,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 08:52:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:45,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:45,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:45,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:52:45,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:45,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:52:45,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:45,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 08:52:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:45,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:45,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:52:45,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:45,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 08:52:45,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:45,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:45,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:45,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:52:45,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 08:52:45,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:45,934 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-09-25 08:52:45,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016269123] [2020-09-25 08:52:45,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:45,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:52:45,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835301842] [2020-09-25 08:52:45,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:52:45,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:45,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:52:45,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:52:45,937 INFO L87 Difference]: Start difference. First operand 143 states and 159 transitions. Second operand 9 states. [2020-09-25 08:52:46,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:46,264 INFO L93 Difference]: Finished difference Result 208 states and 237 transitions. [2020-09-25 08:52:46,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 08:52:46,265 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-09-25 08:52:46,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:46,267 INFO L225 Difference]: With dead ends: 208 [2020-09-25 08:52:46,267 INFO L226 Difference]: Without dead ends: 196 [2020-09-25 08:52:46,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-25 08:52:46,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-25 08:52:46,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 188. [2020-09-25 08:52:46,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-09-25 08:52:46,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 217 transitions. [2020-09-25 08:52:46,296 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 217 transitions. Word has length 121 [2020-09-25 08:52:46,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:46,297 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 217 transitions. [2020-09-25 08:52:46,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:52:46,297 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 217 transitions. [2020-09-25 08:52:46,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 08:52:46,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:46,301 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:46,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 08:52:46,301 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:46,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:46,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1859976952, now seen corresponding path program 1 times [2020-09-25 08:52:46,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:46,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498819093] [2020-09-25 08:52:46,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:46,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:46,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:46,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:46,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking...