/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=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:36:07,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:36:07,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:36:07,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:36:07,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:36:07,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:36:07,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:36:07,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:36:07,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:36:07,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:36:07,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:36:07,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:36:07,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:36:07,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:36:07,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:36:07,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:36:07,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:36:07,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:36:07,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:36:07,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:36:07,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:36:07,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:36:07,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:36:07,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:36:07,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:36:07,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:36:07,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:36:07,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:36:07,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:36:07,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:36:07,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:36:07,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:36:07,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:36:07,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:36:07,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:36:07,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:36:07,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:36:07,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:36:07,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:36:07,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:36:07,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:36:07,143 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 06:36:07,185 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:36:07,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:36:07,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:36:07,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:36:07,189 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:36:07,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:36:07,189 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:36:07,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:36:07,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:36:07,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:36:07,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:36:07,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:36:07,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:36:07,192 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:36:07,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:36:07,192 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:36:07,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:36:07,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:36:07,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:36:07,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:36:07,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:36:07,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:36:07,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:36:07,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:36:07,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:36:07,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:36:07,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:36:07,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:36:07,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:36:07,195 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:36:07,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:36:07,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:36:07,659 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:36:07,660 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:36:07,661 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:36:07,662 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c [2020-09-25 06:36:07,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f72e8ffeb/f3cfc42a9de749099b8fb5a496d151a9/FLAGbb1b0bec3 [2020-09-25 06:36:08,321 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:36:08,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c [2020-09-25 06:36:08,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f72e8ffeb/f3cfc42a9de749099b8fb5a496d151a9/FLAGbb1b0bec3 [2020-09-25 06:36:08,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f72e8ffeb/f3cfc42a9de749099b8fb5a496d151a9 [2020-09-25 06:36:08,655 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:36:08,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:36:08,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:36:08,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:36:08,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:36:08,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:36:08" (1/1) ... [2020-09-25 06:36:08,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd7b52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:08, skipping insertion in model container [2020-09-25 06:36:08,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:36:08" (1/1) ... [2020-09-25 06:36:08,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:36:08,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:36:08,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:36:08,951 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:36:08,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:36:08,982 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:36:08,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:08 WrapperNode [2020-09-25 06:36:08,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:36:08,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:36:08,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:36:08,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:36:08,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:08" (1/1) ... [2020-09-25 06:36:08,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:08" (1/1) ... [2020-09-25 06:36:09,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:08" (1/1) ... [2020-09-25 06:36:09,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:08" (1/1) ... [2020-09-25 06:36:09,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:08" (1/1) ... [2020-09-25 06:36:09,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:08" (1/1) ... [2020-09-25 06:36:09,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:08" (1/1) ... [2020-09-25 06:36:09,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:36:09,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:36:09,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:36:09,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:36:09,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:08" (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 06:36:09,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:36:09,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:36:09,182 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 06:36:09,182 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 06:36:09,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:36:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:36:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:36:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 06:36:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 06:36:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:36:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:36:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:36:09,444 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:36:09,444 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 06:36:09,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:36:09 BoogieIcfgContainer [2020-09-25 06:36:09,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:36:09,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:36:09,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:36:09,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:36:09,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:36:08" (1/3) ... [2020-09-25 06:36:09,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438a14e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:36:09, skipping insertion in model container [2020-09-25 06:36:09,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:08" (2/3) ... [2020-09-25 06:36:09,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438a14e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:36:09, skipping insertion in model container [2020-09-25 06:36:09,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:36:09" (3/3) ... [2020-09-25 06:36:09,461 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2020-09-25 06:36:09,474 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:36:09,486 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:36:09,533 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:36:09,580 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:36:09,580 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:36:09,580 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:36:09,580 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:36:09,581 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:36:09,581 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:36:09,581 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:36:09,581 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:36:09,602 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 06:36:09,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 06:36:09,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:09,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:09,611 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:09,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:09,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 06:36:09,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:09,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021878024] [2020-09-25 06:36:09,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:09,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:09,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:09,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:36:09,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:09,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 06:36:09,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:09,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:09,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:09,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:09,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:36:09,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:36:09,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:09,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:09,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:09,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:09,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:09,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:09,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:09,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:09,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:09,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:09,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:09,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:09,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:09,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:09,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 06:36:09,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:09,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:09,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:09,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:09,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:09,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:09,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:36:09,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021878024] [2020-09-25 06:36:09,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:36:09,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:36:09,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528512397] [2020-09-25 06:36:09,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:36:09,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:09,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:36:09,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:36:09,999 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 06:36:10,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:10,136 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 06:36:10,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:36:10,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 06:36:10,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:10,157 INFO L225 Difference]: With dead ends: 58 [2020-09-25 06:36:10,158 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 06:36:10,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:36:10,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 06:36:10,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 06:36:10,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 06:36:10,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 06:36:10,222 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 06:36:10,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:10,222 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 06:36:10,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:36:10,223 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 06:36:10,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 06:36:10,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:10,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:10,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:36:10,225 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:10,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:10,226 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 06:36:10,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:10,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132731423] [2020-09-25 06:36:10,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:10,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:10,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:10,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 06:36:10,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:10,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 06:36:10,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:10,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:10,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:10,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:10,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:10,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:10,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:10,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:10,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:36:10,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:10,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:10,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:10,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:10,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:10,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:10,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:10,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:10,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 06:36:10,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:10,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:10,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:10,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:10,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:10,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:10,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:36:10,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132731423] [2020-09-25 06:36:10,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:36:10,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:36:10,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323959698] [2020-09-25 06:36:10,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:36:10,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:10,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:36:10,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:36:10,427 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 06:36:10,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:10,507 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 06:36:10,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:36:10,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 06:36:10,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:10,510 INFO L225 Difference]: With dead ends: 50 [2020-09-25 06:36:10,510 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 06:36:10,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:36:10,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 06:36:10,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 06:36:10,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 06:36:10,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 06:36:10,522 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 06:36:10,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:10,522 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 06:36:10,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:36:10,523 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 06:36:10,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 06:36:10,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:10,526 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:36:10,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:36:10,526 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:10,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:10,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 06:36:10,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:10,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675571760] [2020-09-25 06:36:10,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:10,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:10,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:10,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:11,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 06:36:11,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:36:11,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-09-25 06:36:11,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:11,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:11,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:11,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:11,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 06:36:11,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:36:11,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:11,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:11,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:11,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:11,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:36:11,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:11,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:11,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:11,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:11,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:11,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:11,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:11,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:11,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:11,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:36:11,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-09-25 06:36:11,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:11,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:11,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:11,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:11,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:36:11,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:11,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:11,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:11,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:11,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:11,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:36:11,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:11,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:11,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:11,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:11,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:11,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:11,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:11,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:11,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:11,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:36:11,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:11,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:11,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:11,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:11,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:11,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:36:11,639 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:36:11,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675571760] [2020-09-25 06:36:11,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:36:11,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:36:11,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765380258] [2020-09-25 06:36:11,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:36:11,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:11,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:36:11,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:36:11,643 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 06:36:11,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:11,767 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 06:36:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:36:11,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 06:36:11,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:11,771 INFO L225 Difference]: With dead ends: 58 [2020-09-25 06:36:11,771 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 06:36:11,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:36:11,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 06:36:11,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 06:36:11,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 06:36:11,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 06:36:11,783 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 06:36:11,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:11,783 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 06:36:11,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:36:11,784 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 06:36:11,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 06:36:11,786 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:11,786 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:36:11,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:36:11,786 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:11,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:11,787 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 06:36:11,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:11,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314221787] [2020-09-25 06:36:11,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:11,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:12,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 06:36:12,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:36:12,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-09-25 06:36:12,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:12,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:12,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:36:12,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:12,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:12,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:12,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:12,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:12,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:36:12,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:12,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:12,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:12,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:12,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:12,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:12,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:12,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:12,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:36:12,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:36:12,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-09-25 06:36:12,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:12,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:12,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:12,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:12,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:36:12,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:12,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:12,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:12,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:12,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:12,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 06:36:12,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:12,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:12,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:12,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:12,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:36:12,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:12,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:36:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:12,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:12,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:12,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:12,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:36:12,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:12,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:12,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:12,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:12,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:12,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:12,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:36:12,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314221787] [2020-09-25 06:36:12,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:12,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:36:12,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213709849] [2020-09-25 06:36:12,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:36:12,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:12,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:36:12,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:36:12,870 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 06:36:13,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:13,064 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 06:36:13,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:36:13,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 06:36:13,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:13,071 INFO L225 Difference]: With dead ends: 110 [2020-09-25 06:36:13,074 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 06:36:13,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:36:13,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 06:36:13,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 06:36:13,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 06:36:13,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 06:36:13,100 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 06:36:13,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:13,108 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 06:36:13,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:36:13,108 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 06:36:13,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 06:36:13,114 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:13,114 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 06:36:13,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:36:13,115 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:13,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:13,116 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 06:36:13,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:13,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496400047] [2020-09-25 06:36:13,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:13,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:13,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:13,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:13,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:13,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:13,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:13,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:18,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:18,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 06:36:18,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:36:18,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 06:36:18,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:18,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:18,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:18,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:18,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 06:36:18,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:18,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:18,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:18,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:18,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:18,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:18,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:18,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:18,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:18,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:18,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:18,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:18,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:18,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:18,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:18,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:18,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:18,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:18,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:21,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:21,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 06:36:21,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:36:21,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3370 [2020-09-25 06:36:21,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:21,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:21,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:21,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:21,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 06:36:21,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:21,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:21,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:21,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:21,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:21,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:21,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:21,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 06:36:21,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:21,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:36:21,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:21,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:21,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:21,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:21,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:21,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:21,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:21,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:21,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:21,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:21,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:21,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:21,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:21,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:21,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:21,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:21,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:21,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:21,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:36:21,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:21,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:21,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:21,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:21,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:21,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:21,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 06:36:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:21,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:21,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:21,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:21,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:21,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:36:21,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:21,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:21,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:21,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:21,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:36:21,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:36:21,776 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 06:36:21,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496400047] [2020-09-25 06:36:21,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:21,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:36:21,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578809665] [2020-09-25 06:36:21,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:36:21,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:21,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:36:21,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:36:21,780 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 7 states. [2020-09-25 06:36:21,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:21,940 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2020-09-25 06:36:21,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:36:21,941 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 06:36:21,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:21,943 INFO L225 Difference]: With dead ends: 72 [2020-09-25 06:36:21,943 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 06:36:21,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:36:21,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 06:36:21,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 06:36:21,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 06:36:21,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 06:36:21,955 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 51 [2020-09-25 06:36:21,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:21,956 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 06:36:21,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:36:21,956 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 06:36:21,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 06:36:21,959 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:21,959 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 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] [2020-09-25 06:36:21,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:36:21,960 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:21,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:21,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 06:36:21,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:21,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643640045] [2020-09-25 06:36:21,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:21,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:21,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:22,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:22,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:22,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:22,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:22,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:22,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:23,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:26,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:26,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 06:36:26,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:36:26,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:36:26,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:26,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:26,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:26,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:26,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 06:36:26,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:26,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:26,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:26,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:26,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:26,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:26,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:26,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:26,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:26,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:26,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:26,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:26,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:26,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:27,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:31,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:31,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:31,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:31,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:31,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:31,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 06:36:31,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 06:36:32,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:36:32,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:32,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:32,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:32,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:32,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 06:36:32,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:32,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:32,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:32,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:32,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:36:32,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 06:36:32,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:32,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:36:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:36:32,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:32,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:32,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:32,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:32,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:32,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:36:32,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:32,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:32,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:32,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:32,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:32,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:32,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:32,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:32,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:32,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:32,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:36:32,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:32,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:32,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:32,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:32,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:32,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:32,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 06:36:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:32,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:32,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:32,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:32,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 06:36:32,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:32,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:36:32,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:32,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:32,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:32,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:32,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:32,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:36:32,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:32,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:32,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:32,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:32,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:32,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:32,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:32,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:32,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:32,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:32,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:32,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:32,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:32,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:32,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:32,461 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 11 proven. 24 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 06:36:32,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643640045] [2020-09-25 06:36:32,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:32,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:36:32,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979948392] [2020-09-25 06:36:32,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:36:32,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:32,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:36:32,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:36:32,465 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 9 states. [2020-09-25 06:36:32,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:32,651 INFO L93 Difference]: Finished difference Result 88 states and 121 transitions. [2020-09-25 06:36:32,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:36:32,651 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-09-25 06:36:32,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:32,653 INFO L225 Difference]: With dead ends: 88 [2020-09-25 06:36:32,654 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 06:36:32,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:36:32,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 06:36:32,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 68. [2020-09-25 06:36:32,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 06:36:32,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 92 transitions. [2020-09-25 06:36:32,668 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 92 transitions. Word has length 67 [2020-09-25 06:36:32,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:32,669 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 92 transitions. [2020-09-25 06:36:32,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:36:32,669 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 92 transitions. [2020-09-25 06:36:32,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 06:36:32,672 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:32,672 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:36:32,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:36:32,673 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:32,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:32,673 INFO L82 PathProgramCache]: Analyzing trace with hash -2125934686, now seen corresponding path program 1 times [2020-09-25 06:36:32,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:32,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677658972] [2020-09-25 06:36:32,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:32,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:35,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:36,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:37,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:37,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 06:36:37,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 06:36:37,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:36:37,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:37,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:37,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:37,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:37,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 06:36:37,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:37,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:37,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:37,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:37,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:37,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:37,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:37,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:37,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:37,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:37,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:37,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:37,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:37,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:37,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:37,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:38,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:38,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:38,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:39,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:42,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:42,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 06:36:42,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 06:36:42,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:36:42,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:42,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:42,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 06:36:42,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:42,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:42,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:42,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:42,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:43,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:36:43,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:36:43,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-25 06:36:43,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:43,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:36:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:36:43,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:43,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:43,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:43,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:43,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:43,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:36:43,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:43,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:36:43,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:43,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:36:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:43,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:43,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:43,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:43,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:36:43,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:43,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:43,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:43,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:43,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:43,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:43,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 06:36:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:43,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:43,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:43,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:43,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 06:36:43,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:43,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:36:43,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:43,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:43,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:43,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:43,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:43,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:43,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:43,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:43,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:43,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:43,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:43,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:43,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:43,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:43,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:43,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:43,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:43,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:43,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:43,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:43,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:43,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:43,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 06:36:43,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677658972] [2020-09-25 06:36:43,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:43,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:36:43,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58065946] [2020-09-25 06:36:43,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:36:43,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:43,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:36:43,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:36:43,207 INFO L87 Difference]: Start difference. First operand 68 states and 92 transitions. Second operand 9 states. [2020-09-25 06:36:43,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:43,400 INFO L93 Difference]: Finished difference Result 136 states and 209 transitions. [2020-09-25 06:36:43,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:36:43,401 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 06:36:43,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:43,405 INFO L225 Difference]: With dead ends: 136 [2020-09-25 06:36:43,405 INFO L226 Difference]: Without dead ends: 130 [2020-09-25 06:36:43,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:36:43,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-25 06:36:43,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 118. [2020-09-25 06:36:43,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-25 06:36:43,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 185 transitions. [2020-09-25 06:36:43,427 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 185 transitions. Word has length 69 [2020-09-25 06:36:43,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:43,428 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 185 transitions. [2020-09-25 06:36:43,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:36:43,428 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 185 transitions. [2020-09-25 06:36:43,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 06:36:43,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:43,431 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:43,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:36:43,431 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:43,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:43,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1033051071, now seen corresponding path program 1 times [2020-09-25 06:36:43,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:43,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291128081] [2020-09-25 06:36:43,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:43,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:45,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:45,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:45,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:45,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:48,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:48,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 06:36:48,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 06:36:48,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 06:36:48,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:48,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:48,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 06:36:48,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:48,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:48,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:48,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:48,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:48,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:48,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:48,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:48,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:48,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:48,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:48,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:48,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:48,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:48,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:48,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:48,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:48,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:48,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:48,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:48,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:48,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:53,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:53,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 06:36:53,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 06:36:53,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:36:53,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:53,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:36:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:53,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:53,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:53,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:53,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:53,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:53,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:54,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 06:36:54,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:36:54,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 778 [2020-09-25 06:36:54,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:54,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:54,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:54,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:36:54,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:36:54,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:54,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:54,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:54,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:54,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:54,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 06:36:54,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:54,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:54,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:54,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:54,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:36:54,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:54,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:54,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:54,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:54,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:54,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:36:54,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:54,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:54,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:54,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:54,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:54,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:54,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:54,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:54,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:54,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:54,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:36:54,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:54,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:54,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:54,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:54,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:54,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 06:36:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:54,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:54,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:54,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:54,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:36:54,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:54,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:54,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:54,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:54,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:54,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 06:36:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:54,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:54,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:54,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:54,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 06:36:54,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:54,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:54,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 06:36:54,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:54,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:54,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:54,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:54,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:54,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:54,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:54,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:54,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:54,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:54,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:54,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:54,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:54,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:54,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:54,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:54,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:54,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:54,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:54,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:54,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:54,562 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 27 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-25 06:36:54,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291128081] [2020-09-25 06:36:54,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:54,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 06:36:54,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666803500] [2020-09-25 06:36:54,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:36:54,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:54,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:36:54,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:36:54,565 INFO L87 Difference]: Start difference. First operand 118 states and 185 transitions. Second operand 10 states. [2020-09-25 06:36:54,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:54,760 INFO L93 Difference]: Finished difference Result 282 states and 507 transitions. [2020-09-25 06:36:54,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:36:54,761 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-09-25 06:36:54,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:54,764 INFO L225 Difference]: With dead ends: 282 [2020-09-25 06:36:54,764 INFO L226 Difference]: Without dead ends: 170 [2020-09-25 06:36:54,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-09-25 06:36:54,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-09-25 06:36:54,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 152. [2020-09-25 06:36:54,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-25 06:36:54,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 249 transitions. [2020-09-25 06:36:54,789 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 249 transitions. Word has length 85 [2020-09-25 06:36:54,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:54,789 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 249 transitions. [2020-09-25 06:36:54,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:36:54,790 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 249 transitions. [2020-09-25 06:36:54,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 06:36:54,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:54,793 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:36:54,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:36:54,793 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:54,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:54,794 INFO L82 PathProgramCache]: Analyzing trace with hash 6794146, now seen corresponding path program 1 times [2020-09-25 06:36:54,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:54,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098154206] [2020-09-25 06:36:54,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:54,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:55,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:56,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:59,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:59,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:59,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:59,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 06:36:59,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:36:59,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 06:36:59,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:59,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:59,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:59,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 06:36:59,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:59,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:59,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:59,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:59,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:59,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:59,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:59,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:59,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:59,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:59,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:59,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:59,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:59,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:59,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:59,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:59,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:00,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:00,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:00,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:00,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking...