/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_10-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:06:57,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:06:57,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:06:57,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:06:57,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:06:57,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:06:57,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:06:57,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:06:57,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:06:57,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:06:57,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:06:57,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:06:57,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:06:57,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:06:57,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:06:57,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:06:57,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:06:57,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:06:57,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:06:57,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:06:57,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:06:57,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:06:57,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:06:57,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:06:57,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:06:57,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:06:57,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:06:57,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:06:57,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:06:57,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:06:57,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:06:57,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:06:57,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:06:57,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:06:57,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:06:57,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:06:57,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:06:57,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:06:57,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:06:57,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:06:57,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:06:57,215 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 11:06:57,258 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:06:57,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:06:57,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:06:57,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:06:57,260 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:06:57,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:06:57,261 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:06:57,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:06:57,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:06:57,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:06:57,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:06:57,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:06:57,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:06:57,264 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:06:57,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:06:57,264 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:06:57,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:06:57,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:06:57,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:06:57,265 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:06:57,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:06:57,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:06:57,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:06:57,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:06:57,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:06:57,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:06:57,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:06:57,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:06:57,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:06:57,267 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:06:57,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:06:57,720 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:06:57,725 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:06:57,727 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:06:57,727 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:06:57,728 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_10-1.c [2020-09-25 11:06:57,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6707f865/eb914f4e1f774378ae1f6e5b66fe43f8/FLAGef41e83a8 [2020-09-25 11:06:58,354 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:06:58,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_10-1.c [2020-09-25 11:06:58,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6707f865/eb914f4e1f774378ae1f6e5b66fe43f8/FLAGef41e83a8 [2020-09-25 11:06:58,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6707f865/eb914f4e1f774378ae1f6e5b66fe43f8 [2020-09-25 11:06:58,704 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:06:58,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:06:58,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:06:58,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:06:58,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:06:58,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:06:58" (1/1) ... [2020-09-25 11:06:58,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:58, skipping insertion in model container [2020-09-25 11:06:58,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:06:58" (1/1) ... [2020-09-25 11:06:58,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:06:58,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:06:58,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:06:58,967 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:06:58,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:06:58,999 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:06:59,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:59 WrapperNode [2020-09-25 11:06:59,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:06:59,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:06:59,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:06:59,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:06:59,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:59" (1/1) ... [2020-09-25 11:06:59,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:59" (1/1) ... [2020-09-25 11:06:59,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:59" (1/1) ... [2020-09-25 11:06:59,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:59" (1/1) ... [2020-09-25 11:06:59,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:59" (1/1) ... [2020-09-25 11:06:59,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:59" (1/1) ... [2020-09-25 11:06:59,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:59" (1/1) ... [2020-09-25 11:06:59,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:06:59,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:06:59,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:06:59,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:06:59,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:59" (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 11:06:59,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:06:59,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:06:59,193 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 11:06:59,193 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 11:06:59,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:06:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:06:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:06:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 11:06:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 11:06:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:06:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:06:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:06:59,470 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:06:59,471 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:06:59,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:06:59 BoogieIcfgContainer [2020-09-25 11:06:59,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:06:59,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:06:59,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:06:59,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:06:59,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:06:58" (1/3) ... [2020-09-25 11:06:59,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c96f36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:06:59, skipping insertion in model container [2020-09-25 11:06:59,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:59" (2/3) ... [2020-09-25 11:06:59,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c96f36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:06:59, skipping insertion in model container [2020-09-25 11:06:59,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:06:59" (3/3) ... [2020-09-25 11:06:59,497 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_10-1.c [2020-09-25 11:06:59,521 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:06:59,533 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:06:59,554 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:06:59,586 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:06:59,587 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:06:59,587 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:06:59,587 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:06:59,588 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:06:59,588 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:06:59,588 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:06:59,588 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:06:59,613 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 11:06:59,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 11:06:59,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:59,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:59,623 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:59,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:59,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 11:06:59,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:59,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932208191] [2020-09-25 11:06:59,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:59,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:59,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:59,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:59,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 11:06:59,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:59,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:59,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:59,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:06:59,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:06:59,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:06:59,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:59,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:59,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:59,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:59,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:06:59,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:59,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:59,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:59,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:59,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:59,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:06:59,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:06:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:59,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:59,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:59,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:59,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 11:06:59,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:59,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:59,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:59,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:06:59,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:59,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:59,999 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 11:07:00,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932208191] [2020-09-25 11:07:00,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:00,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:07:00,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136260031] [2020-09-25 11:07:00,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:07:00,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:00,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:07:00,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:07:00,027 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 11:07:00,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:00,173 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 11:07:00,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:07:00,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 11:07:00,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:00,190 INFO L225 Difference]: With dead ends: 58 [2020-09-25 11:07:00,191 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 11:07:00,196 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 11:07:00,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 11:07:00,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 11:07:00,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 11:07:00,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 11:07:00,256 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 11:07:00,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:00,257 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 11:07:00,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:07:00,257 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 11:07:00,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 11:07:00,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:00,260 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 11:07:00,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:07:00,260 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:00,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:00,261 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 11:07:00,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:00,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905521492] [2020-09-25 11:07:00,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:00,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:00,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:00,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 11:07:00,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:00,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 11:07:00,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:00,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:00,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:00,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:00,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:00,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:00,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:00,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:00,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:07:00,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:00,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:00,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:00,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:00,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:00,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:00,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:00,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:00,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:00,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:00,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:00,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 11:07:00,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:00,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:00,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:00,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:00,513 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 11:07:00,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905521492] [2020-09-25 11:07:00,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:00,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:07:00,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539859680] [2020-09-25 11:07:00,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:07:00,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:00,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:07:00,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:07:00,520 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 11:07:00,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:00,600 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 11:07:00,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:07:00,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 11:07:00,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:00,602 INFO L225 Difference]: With dead ends: 50 [2020-09-25 11:07:00,602 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 11:07:00,604 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 11:07:00,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 11:07:00,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 11:07:00,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 11:07:00,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 11:07:00,614 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 11:07:00,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:00,615 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 11:07:00,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:07:00,615 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 11:07:00,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 11:07:00,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:00,617 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 11:07:00,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:07:00,617 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:00,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:00,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 11:07:00,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:00,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89647888] [2020-09-25 11:07:00,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:00,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:00,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:00,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:01,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:01,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 11:07:01,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:01,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-09-25 11:07:01,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:01,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:01,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:01,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:01,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:07:01,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:07:01,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:01,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:01,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:01,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:01,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:01,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:07:01,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:01,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:01,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:01,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:01,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:01,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:01,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:01,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:01,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:01,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:01,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:01,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:01,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:01,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-25 11:07:01,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:01,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:01,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:01,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:01,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:01,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:01,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:01,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:01,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:01,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:01,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:01,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:07:01,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:01,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:01,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:01,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:01,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:01,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:01,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:01,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:01,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:01,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:01,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:01,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:07:01,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:01,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:01,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:01,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:01,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:01,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:01,640 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 11:07:01,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89647888] [2020-09-25 11:07:01,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:01,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:07:01,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967274364] [2020-09-25 11:07:01,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:01,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:01,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:01,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:01,651 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 11:07:01,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:01,846 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 11:07:01,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:07:01,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 11:07:01,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:01,853 INFO L225 Difference]: With dead ends: 58 [2020-09-25 11:07:01,853 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 11:07:01,855 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 11:07:01,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 11:07:01,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 11:07:01,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 11:07:01,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 11:07:01,881 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 11:07:01,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:01,882 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 11:07:01,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:01,882 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 11:07:01,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 11:07:01,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:01,886 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 11:07:01,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:07:01,887 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:01,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:01,887 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 11:07:01,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:01,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359290847] [2020-09-25 11:07:01,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:01,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:01,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:02,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 11:07:02,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:07:02,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-09-25 11:07:02,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:02,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:02,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:02,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:02,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:07:02,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:02,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:02,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:02,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:02,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:02,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:02,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:02,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:02,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:02,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:02,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:02,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:07:02,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:07:02,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-09-25 11:07:02,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:02,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:02,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:02,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:02,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:07:02,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:02,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:02,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:03,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:03,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:03,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:03,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:07:03,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:03,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:03,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:03,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:03,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:03,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:03,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:03,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:03,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:07:03,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:03,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:03,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:03,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:03,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:03,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:03,063 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 11:07:03,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359290847] [2020-09-25 11:07:03,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:03,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:07:03,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571501301] [2020-09-25 11:07:03,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:03,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:03,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:03,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:03,067 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 11:07:03,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:03,229 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 11:07:03,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:07:03,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 11:07:03,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:03,232 INFO L225 Difference]: With dead ends: 110 [2020-09-25 11:07:03,233 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 11:07:03,234 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 11:07:03,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 11:07:03,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 11:07:03,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 11:07:03,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 11:07:03,247 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 11:07:03,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:03,247 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 11:07:03,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:03,248 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 11:07:03,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 11:07:03,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:03,251 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 11:07:03,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:07:03,251 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:03,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:03,252 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 11:07:03,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:03,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143814768] [2020-09-25 11:07:03,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:03,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:03,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:03,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:03,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:03,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:03,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:03,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:08,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:08,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 11:07:08,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:07:08,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:07:08,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:08,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 11:07:08,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:08,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:08,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:08,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:08,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:08,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:08,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:08,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:08,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:08,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:08,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:08,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:08,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:08,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:08,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:09,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:09,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:09,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:12,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:07:12,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:07:12,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4126 [2020-09-25 11:07:12,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:12,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:12,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:12,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:12,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:07:12,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:12,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:12,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:12,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:12,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:12,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 11:07:12,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:12,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:12,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:12,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:12,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:12,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:12,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:12,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:12,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:12,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:12,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:12,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:12,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:12,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:12,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:12,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:12,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:12,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:12,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:12,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:12,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:07:12,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:12,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:12,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:12,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:12,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:12,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:12,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:07:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:12,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:12,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:12,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:12,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:07:12,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:12,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:12,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:12,682 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 11:07:12,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143814768] [2020-09-25 11:07:12,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:12,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:07:12,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028011185] [2020-09-25 11:07:12,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:12,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:12,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:12,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:12,685 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 7 states. [2020-09-25 11:07:12,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:12,849 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2020-09-25 11:07:12,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:07:12,850 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 11:07:12,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:12,852 INFO L225 Difference]: With dead ends: 72 [2020-09-25 11:07:12,856 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 11:07:12,857 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 11:07:12,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 11:07:12,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 11:07:12,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 11:07:12,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 11:07:12,879 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 51 [2020-09-25 11:07:12,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:12,881 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 11:07:12,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:12,882 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 11:07:12,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 11:07:12,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:12,890 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 11:07:12,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:07:12,891 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:12,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:12,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 11:07:12,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:12,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730876110] [2020-09-25 11:07:12,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:12,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:14,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:17,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:17,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 11:07:17,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:07:17,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 11:07:17,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:17,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:17,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:07:17,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:17,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 11:07:17,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:17,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:17,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:17,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:17,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:17,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:17,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:07:17,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:17,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:17,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:17,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:17,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:17,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:17,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:17,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:17,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:17,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:18,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:18,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:18,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:20,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:20,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:22,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:22,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 11:07:22,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:07:22,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:07:22,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:22,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:22,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:07:22,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:07:22,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 11:07:22,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:22,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:22,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:23,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:23,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:23,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 11:07:23,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:23,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:23,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:23,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:23,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:07:23,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:23,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:23,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:23,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:23,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:23,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:07:23,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:23,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:23,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:23,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:23,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:23,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:23,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:23,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:23,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:07:23,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:23,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:23,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:23,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:23,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:23,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:23,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:07:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:23,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:23,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:23,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:23,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 11:07:23,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:23,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:23,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:23,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:23,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:23,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:23,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:23,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:23,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:23,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:23,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:07:23,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:23,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:23,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:23,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:23,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:23,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:23,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:23,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:23,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:23,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:23,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:07:23,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:23,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:23,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:23,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:23,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:23,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 19 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 11:07:23,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730876110] [2020-09-25 11:07:23,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:23,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:07:23,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154224107] [2020-09-25 11:07:23,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:07:23,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:23,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:07:23,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:07:23,373 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 11 states. [2020-09-25 11:07:23,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:23,787 INFO L93 Difference]: Finished difference Result 139 states and 210 transitions. [2020-09-25 11:07:23,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:07:23,788 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-25 11:07:23,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:23,790 INFO L225 Difference]: With dead ends: 139 [2020-09-25 11:07:23,790 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 11:07:23,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:07:23,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 11:07:23,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2020-09-25 11:07:23,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 11:07:23,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2020-09-25 11:07:23,804 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 67 [2020-09-25 11:07:23,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:23,805 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2020-09-25 11:07:23,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:07:23,805 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2020-09-25 11:07:23,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 11:07:23,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:23,807 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 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, 1] [2020-09-25 11:07:23,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:07:23,808 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:23,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:23,808 INFO L82 PathProgramCache]: Analyzing trace with hash 261409208, now seen corresponding path program 1 times [2020-09-25 11:07:23,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:23,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752247986] [2020-09-25 11:07:23,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:23,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:25,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:25,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:28,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:28,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:28,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 11:07:28,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:07:28,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:07:28,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:28,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:28,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:07:28,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:28,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 11:07:28,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:28,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:28,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:28,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:28,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:28,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:28,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:28,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:28,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:28,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:28,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:28,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:28,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:28,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:28,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:28,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:28,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:28,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:28,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:30,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:30,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:30,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:30,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:33,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:33,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 11:07:33,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:07:33,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:07:33,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:33,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:33,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:07:33,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:33,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 11:07:33,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:33,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:33,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:33,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:33,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:34,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:07:34,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:34,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-09-25 11:07:34,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:34,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:34,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:07:34,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:34,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 11:07:34,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:34,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:34,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:34,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:34,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:34,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:07:34,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:34,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:34,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:34,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:34,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:34,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:34,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:34,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:34,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:07:34,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:34,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:34,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:34,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:34,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:34,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:34,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 11:07:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:34,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:34,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:07:34,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:34,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:07:34,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:34,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:34,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:34,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:34,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:07:34,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:34,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:34,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:34,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:34,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:34,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:34,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:34,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:34,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:34,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:34,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:34,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:34,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:34,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:34,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:34,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:34,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:34,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:34,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:34,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:34,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:34,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:34,250 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 11:07:34,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752247986] [2020-09-25 11:07:34,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:34,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:07:34,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038670965] [2020-09-25 11:07:34,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:07:34,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:34,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:07:34,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:07:34,253 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand 8 states. [2020-09-25 11:07:34,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:34,426 INFO L93 Difference]: Finished difference Result 103 states and 136 transitions. [2020-09-25 11:07:34,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:07:34,427 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-09-25 11:07:34,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:34,431 INFO L225 Difference]: With dead ends: 103 [2020-09-25 11:07:34,431 INFO L226 Difference]: Without dead ends: 97 [2020-09-25 11:07:34,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:07:34,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-25 11:07:34,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 77. [2020-09-25 11:07:34,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 11:07:34,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 102 transitions. [2020-09-25 11:07:34,464 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 102 transitions. Word has length 70 [2020-09-25 11:07:34,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:34,465 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 102 transitions. [2020-09-25 11:07:34,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:07:34,467 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 102 transitions. [2020-09-25 11:07:34,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 11:07:34,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:34,469 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 11:07:34,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:07:34,471 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:34,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:34,472 INFO L82 PathProgramCache]: Analyzing trace with hash 2103958142, now seen corresponding path program 1 times [2020-09-25 11:07:34,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:34,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608853076] [2020-09-25 11:07:34,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:34,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:39,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:39,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:39,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:39,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:39,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 11:07:39,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:07:39,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:07:39,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:39,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:39,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:07:39,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:07:39,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 11:07:39,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:39,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:39,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:39,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:39,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:39,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:39,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:39,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:39,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:39,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:39,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:39,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:39,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:39,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:39,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:39,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:39,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:39,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:39,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:39,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:39,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:39,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:39,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:40,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:40,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:41,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:43,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:43,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:43,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:43,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:44,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:44,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 11:07:44,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-09-25 11:07:44,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:07:44,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:44,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:44,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:07:44,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:07:44,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 11:07:44,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:44,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:44,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:44,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:44,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:44,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:44,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:44,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:45,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:45,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:46,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:46,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:07:46,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:07:46,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1708 [2020-09-25 11:07:46,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:46,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:46,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:46,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:46,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:07:46,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:46,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:46,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:46,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:46,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:46,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:46,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:46,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 11:07:46,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:46,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:46,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:46,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:46,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:46,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:46,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:46,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:46,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:46,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:46,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:46,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:46,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:46,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:46,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:46,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:46,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:46,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:46,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:46,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:46,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:46,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:46,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:46,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:07:46,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:46,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:46,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:46,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:46,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:46,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:46,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:07:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:46,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:46,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:46,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:46,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:46,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:07:46,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:46,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:46,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:46,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 11:07:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:46,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:46,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:46,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:46,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:46,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:47,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:47,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 11:07:47,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:07:47,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1265 [2020-09-25 11:07:47,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:47,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:47,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:47,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:47,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 11:07:47,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:47,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:47,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:47,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:47,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:47,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:47,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:47,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 11:07:47,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:47,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:47,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:47,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:47,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:07:47,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:47,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:47,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:47,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:47,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:47,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:47,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:07:47,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:47,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:47,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:47,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:47,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:47,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:47,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:47,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:47,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:47,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:47,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:47,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:07:47,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:47,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:47,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:47,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:07:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:47,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:47,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:47,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:47,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:47,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:07:47,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:47,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:47,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:47,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:47,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:47,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:47,898 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 52 proven. 28 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-09-25 11:07:47,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608853076] [2020-09-25 11:07:47,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:47,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:07:47,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297113904] [2020-09-25 11:07:47,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:07:47,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:47,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:07:47,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:07:47,900 INFO L87 Difference]: Start difference. First operand 77 states and 102 transitions. Second operand 9 states. [2020-09-25 11:07:48,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:48,194 INFO L93 Difference]: Finished difference Result 188 states and 290 transitions. [2020-09-25 11:07:48,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:07:48,195 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-09-25 11:07:48,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:48,197 INFO L225 Difference]: With dead ends: 188 [2020-09-25 11:07:48,197 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 11:07:48,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:07:48,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 11:07:48,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-09-25 11:07:48,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-09-25 11:07:48,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 159 transitions. [2020-09-25 11:07:48,222 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 159 transitions. Word has length 102 [2020-09-25 11:07:48,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:48,222 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 159 transitions. [2020-09-25 11:07:48,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:07:48,223 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 159 transitions. [2020-09-25 11:07:48,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 11:07:48,226 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:48,226 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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 11:07:48,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:07:48,230 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:48,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:48,230 INFO L82 PathProgramCache]: Analyzing trace with hash -594280133, now seen corresponding path program 2 times [2020-09-25 11:07:48,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:48,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769159414] [2020-09-25 11:07:48,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:48,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking...