/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=0.3 --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_4-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:15:35,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:15:35,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:15:35,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:15:35,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:15:35,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:15:35,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:15:35,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:15:35,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:15:35,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:15:35,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:15:35,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:15:35,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:15:35,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:15:35,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:15:35,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:15:35,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:15:35,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:15:35,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:15:35,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:15:35,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:15:35,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:15:35,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:15:35,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:15:35,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:15:35,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:15:35,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:15:35,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:15:35,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:15:35,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:15:35,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:15:35,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:15:35,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:15:35,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:15:35,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:15:35,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:15:35,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:15:35,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:15:35,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:15:35,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:15:35,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:15:35,582 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 12:15:35,609 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:15:35,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:15:35,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:15:35,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:15:35,611 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:15:35,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:15:35,612 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:15:35,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:15:35,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:15:35,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:15:35,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:15:35,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:15:35,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:15:35,613 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:15:35,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:15:35,614 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:15:35,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:15:35,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:15:35,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:15:35,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:15:35,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:15:35,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:15:35,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:15:35,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:15:35,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:15:35,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:15:35,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:15:35,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:15:35,617 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:15:35,617 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:15:36,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:15:36,123 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:15:36,131 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:15:36,133 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:15:36,133 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:15:36,134 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c [2020-09-25 12:15:36,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a6424ca6/2429f2f4c396485faaadc8eb84413270/FLAG94f5bb723 [2020-09-25 12:15:36,770 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:15:36,771 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c [2020-09-25 12:15:36,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a6424ca6/2429f2f4c396485faaadc8eb84413270/FLAG94f5bb723 [2020-09-25 12:15:37,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a6424ca6/2429f2f4c396485faaadc8eb84413270 [2020-09-25 12:15:37,110 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:15:37,116 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:15:37,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:15:37,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:15:37,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:15:37,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:15:37" (1/1) ... [2020-09-25 12:15:37,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cdd711c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:37, skipping insertion in model container [2020-09-25 12:15:37,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:15:37" (1/1) ... [2020-09-25 12:15:37,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:15:37,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:15:37,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:15:37,412 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:15:37,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:15:37,444 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:15:37,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:37 WrapperNode [2020-09-25 12:15:37,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:15:37,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:15:37,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:15:37,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:15:37,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:37" (1/1) ... [2020-09-25 12:15:37,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:37" (1/1) ... [2020-09-25 12:15:37,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:37" (1/1) ... [2020-09-25 12:15:37,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:37" (1/1) ... [2020-09-25 12:15:37,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:37" (1/1) ... [2020-09-25 12:15:37,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:37" (1/1) ... [2020-09-25 12:15:37,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:37" (1/1) ... [2020-09-25 12:15:37,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:15:37,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:15:37,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:15:37,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:15:37,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:37" (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 12:15:37,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:15:37,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:15:37,637 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 12:15:37,638 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 12:15:37,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:15:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:15:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:15:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 12:15:37,639 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 12:15:37,639 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:15:37,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:15:37,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:15:38,004 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:15:38,005 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:15:38,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:15:38 BoogieIcfgContainer [2020-09-25 12:15:38,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:15:38,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:15:38,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:15:38,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:15:38,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:15:37" (1/3) ... [2020-09-25 12:15:38,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae71ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:15:38, skipping insertion in model container [2020-09-25 12:15:38,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:37" (2/3) ... [2020-09-25 12:15:38,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae71ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:15:38, skipping insertion in model container [2020-09-25 12:15:38,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:15:38" (3/3) ... [2020-09-25 12:15:38,020 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-1.c [2020-09-25 12:15:38,032 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:15:38,042 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:15:38,065 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:15:38,097 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:15:38,098 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:15:38,098 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:15:38,098 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:15:38,099 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:15:38,099 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:15:38,099 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:15:38,099 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:15:38,123 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 12:15:38,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 12:15:38,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:38,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:38,132 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:38,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:38,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 12:15:38,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:38,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986639159] [2020-09-25 12:15:38,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:38,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:38,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:38,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:15:38,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:38,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 12:15:38,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:38,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:15:38,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:15:38,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:38,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:38,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:38,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:38,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:38,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:15:38,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:38,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:38,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:38,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:38,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:38,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:38,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:38,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:38,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:38,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:38,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:38,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:15:38,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:38,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:38,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:38,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:38,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:38,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:38,454 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 12:15:38,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986639159] [2020-09-25 12:15:38,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:15:38,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:15:38,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197172065] [2020-09-25 12:15:38,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:15:38,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:38,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:15:38,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:15:38,490 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 12:15:38,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:38,617 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 12:15:38,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:15:38,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 12:15:38,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:38,634 INFO L225 Difference]: With dead ends: 58 [2020-09-25 12:15:38,635 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 12:15:38,639 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 12:15:38,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 12:15:38,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 12:15:38,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:15:38,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 12:15:38,703 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 12:15:38,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:38,703 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 12:15:38,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:15:38,704 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 12:15:38,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 12:15:38,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:38,707 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 12:15:38,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:15:38,708 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:38,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:38,708 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 12:15:38,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:38,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158504144] [2020-09-25 12:15:38,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:38,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:38,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:38,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 12:15:38,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:38,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 12:15:38,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:38,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:38,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:38,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:38,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:38,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:15:38,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:38,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:38,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:38,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:38,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:38,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:15:38,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:38,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:38,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:38,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:38,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:38,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:38,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:38,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:38,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:38,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:38,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 12:15:38,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:38,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:38,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:38,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:38,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:38,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:38,935 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 12:15:38,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158504144] [2020-09-25 12:15:38,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:15:38,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:15:38,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795784604] [2020-09-25 12:15:38,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:15:38,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:38,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:15:38,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:15:38,939 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 12:15:39,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:39,012 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 12:15:39,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:15:39,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 12:15:39,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:39,015 INFO L225 Difference]: With dead ends: 50 [2020-09-25 12:15:39,015 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 12:15:39,016 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 12:15:39,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 12:15:39,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 12:15:39,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:15:39,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 12:15:39,029 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 12:15:39,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:39,029 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 12:15:39,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:15:39,030 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 12:15:39,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 12:15:39,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:39,034 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 12:15:39,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:15:39,034 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:39,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:39,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 12:15:39,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:39,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821704678] [2020-09-25 12:15:39,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:39,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:39,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 12:15:39,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:15:39,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-09-25 12:15:39,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:39,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:39,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:39,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:39,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:15:39,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:15:39,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:39,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:39,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:39,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:39,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:15:39,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:39,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:39,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:39,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:39,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:39,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:39,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:39,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:40,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:40,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:40,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:15:40,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-09-25 12:15:40,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:40,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:15:40,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:40,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:40,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:40,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:40,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:40,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:40,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:15:40,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:40,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:40,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:40,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:40,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:40,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:40,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:40,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:15:40,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:40,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:40,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:40,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:40,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:40,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:40,124 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 12:15:40,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821704678] [2020-09-25 12:15:40,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:15:40,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:15:40,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948757230] [2020-09-25 12:15:40,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:15:40,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:40,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:15:40,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:15:40,127 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 12:15:40,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:40,256 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 12:15:40,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:40,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 12:15:40,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:40,259 INFO L225 Difference]: With dead ends: 58 [2020-09-25 12:15:40,259 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 12:15:40,260 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 12:15:40,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 12:15:40,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 12:15:40,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 12:15:40,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 12:15:40,271 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 12:15:40,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:40,272 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 12:15:40,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:15:40,272 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 12:15:40,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 12:15:40,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:40,274 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 12:15:40,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:15:40,275 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:40,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:40,275 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 12:15:40,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:40,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367310832] [2020-09-25 12:15:40,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:40,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:40,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:40,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:40,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:40,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:40,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 12:15:40,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:15:40,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-09-25 12:15:40,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:40,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:40,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:40,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:40,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 12:15:40,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:15:40,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:40,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:40,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:40,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:40,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:40,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:15:40,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:40,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:40,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:40,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:40,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:40,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:40,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:40,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:40,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:41,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:15:41,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:15:41,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-09-25 12:15:41,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:41,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:41,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:41,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:41,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:15:41,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:41,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:41,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:41,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:41,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:41,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:15:41,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:41,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:41,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:15:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:41,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:15:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:41,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:41,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:41,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:41,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:15:41,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:41,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:41,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:41,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:41,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:41,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:41,453 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 12:15:41,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367310832] [2020-09-25 12:15:41,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:41,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:15:41,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378724137] [2020-09-25 12:15:41,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:15:41,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:41,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:15:41,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:15:41,458 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 12:15:41,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:41,595 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 12:15:41,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:41,596 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 12:15:41,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:41,599 INFO L225 Difference]: With dead ends: 110 [2020-09-25 12:15:41,599 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 12:15:41,601 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 12:15:41,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 12:15:41,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 12:15:41,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 12:15:41,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 12:15:41,613 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 12:15:41,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:41,613 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 12:15:41,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:15:41,614 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 12:15:41,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 12:15:41,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:41,617 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 12:15:41,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:15:41,617 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:41,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:41,618 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 12:15:41,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:41,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800897596] [2020-09-25 12:15:41,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:41,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:46,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:46,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 12:15:46,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:15:46,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:15:46,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:46,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:46,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:46,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:46,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 12:15:46,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:46,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:46,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:46,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:46,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:46,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:46,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:46,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:46,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:46,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:46,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:46,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:46,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:46,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:46,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:46,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:46,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:46,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:50,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 12:15:50,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:15:50,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3942 [2020-09-25 12:15:50,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:50,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:50,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:50,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:50,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:15:50,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:50,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:50,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:50,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:50,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:50,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 12:15:50,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:50,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:50,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:50,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:50,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:15:50,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:50,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:50,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:50,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:50,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:50,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:15:50,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:50,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:50,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:50,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:50,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:50,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:50,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:50,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:50,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:50,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:50,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:15:50,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:50,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:50,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:50,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:15:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:50,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:50,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:50,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:50,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:15:50,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:50,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:50,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:15:50,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:50,856 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 12:15:50,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800897596] [2020-09-25 12:15:50,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:50,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:15:50,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262580762] [2020-09-25 12:15:50,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:15:50,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:50,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:15:50,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:15:50,859 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 7 states. [2020-09-25 12:15:51,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:51,016 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2020-09-25 12:15:51,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:51,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 12:15:51,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:51,019 INFO L225 Difference]: With dead ends: 72 [2020-09-25 12:15:51,019 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 12:15:51,020 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 12:15:51,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 12:15:51,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 12:15:51,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 12:15:51,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 12:15:51,047 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 51 [2020-09-25 12:15:51,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:51,047 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 12:15:51,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:15:51,047 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 12:15:51,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 12:15:51,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:51,058 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 12:15:51,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:15:51,060 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:51,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:51,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 12:15:51,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:51,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932385753] [2020-09-25 12:15:51,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:51,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:51,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:51,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:51,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:51,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:51,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:51,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:51,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:56,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:56,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 12:15:56,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:15:56,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:15:56,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:56,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:56,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:56,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:56,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 12:15:56,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:56,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:56,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:56,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:56,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:56,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:56,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:56,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:56,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:56,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:56,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:56,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:56,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:56,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:56,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:56,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:56,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:56,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:56,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:00,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:00,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:00,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:01,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:16:01,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 12:16:01,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:16:01,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:01,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:01,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:01,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:01,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 12:16:01,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:01,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:01,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:01,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:16:01,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:01,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 12:16:01,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:01,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:01,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:01,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:01,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:16:01,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:01,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:01,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:01,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:01,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:01,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:01,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:01,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:01,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:01,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:01,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:01,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:01,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:16:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:01,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:01,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:01,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:01,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:01,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:01,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:01,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:01,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:16:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:01,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:01,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:16:01,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:01,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 12:16:01,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:01,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:01,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:16:01,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:01,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:16:01,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:01,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:01,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:01,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:01,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:01,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:16:01,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:01,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:01,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:01,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:01,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:01,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:01,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:16:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:01,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:01,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:01,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:01,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:16:01,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:01,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:01,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:01,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:01,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:01,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:01,383 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 12:16:01,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932385753] [2020-09-25 12:16:01,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:01,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:16:01,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437589425] [2020-09-25 12:16:01,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:16:01,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:01,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:16:01,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:16:01,387 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 9 states. [2020-09-25 12:16:01,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:01,558 INFO L93 Difference]: Finished difference Result 78 states and 105 transitions. [2020-09-25 12:16:01,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:16:01,560 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-09-25 12:16:01,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:01,563 INFO L225 Difference]: With dead ends: 78 [2020-09-25 12:16:01,563 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 12:16:01,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:16:01,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 12:16:01,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2020-09-25 12:16:01,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 12:16:01,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2020-09-25 12:16:01,588 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 67 [2020-09-25 12:16:01,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:01,589 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2020-09-25 12:16:01,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:16:01,589 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2020-09-25 12:16:01,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 12:16:01,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:01,591 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:01,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:16:01,592 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:01,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:01,592 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 12:16:01,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:01,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174213340] [2020-09-25 12:16:01,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:01,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:03,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:04,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:05,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:06,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 12:16:06,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 12:16:06,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:16:06,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:06,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:06,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:06,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:16:06,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:16:06,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:06,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:06,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:06,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:06,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:06,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:06,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:06,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:06,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:06,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:06,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:06,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:06,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:06,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:07,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:07,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:08,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:11,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:11,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:16:11,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:16:11,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 12:16:11,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:11,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:16:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:16:11,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:11,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:11,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:11,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:11,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:12,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:16:12,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:16:12,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-09-25 12:16:12,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:12,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:16:12,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:12,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:16:12,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:12,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:12,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:12,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:16:12,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:12,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:16:12,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:12,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:12,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:12,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:12,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:16:12,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:12,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:16:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:12,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:12,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:12,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:12,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:16:12,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:12,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:12,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:12,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:12,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:12,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:12,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:16:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:12,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:12,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:16:12,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:16:12,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 12:16:12,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:12,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:16:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:12,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:16:12,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:12,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:12,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:12,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:16:12,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:12,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:16:12,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:12,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:12,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:12,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:12,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:12,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:12,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:16:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:12,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:12,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:12,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:12,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:16:12,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:12,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:12,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:12,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:12,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:12,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-25 12:16:12,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174213340] [2020-09-25 12:16:12,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:12,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:16:12,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582942740] [2020-09-25 12:16:12,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:16:12,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:12,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:16:12,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:16:12,360 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand 9 states. [2020-09-25 12:16:12,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:12,526 INFO L93 Difference]: Finished difference Result 136 states and 206 transitions. [2020-09-25 12:16:12,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:16:12,527 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 12:16:12,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:12,529 INFO L225 Difference]: With dead ends: 136 [2020-09-25 12:16:12,529 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 12:16:12,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:16:12,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 12:16:12,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-25 12:16:12,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 12:16:12,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 109 transitions. [2020-09-25 12:16:12,544 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 109 transitions. Word has length 69 [2020-09-25 12:16:12,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:12,545 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 109 transitions. [2020-09-25 12:16:12,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:16:12,545 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 109 transitions. [2020-09-25 12:16:12,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 12:16:12,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:12,547 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 12:16:12,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:16:12,548 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:12,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:12,548 INFO L82 PathProgramCache]: Analyzing trace with hash 2120760888, now seen corresponding path program 1 times [2020-09-25 12:16:12,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:12,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725851187] [2020-09-25 12:16:12,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:12,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:15,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:17,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 12:16:17,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 12:16:17,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 12:16:17,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:17,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:17,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:17,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:16:17,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 12:16:17,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:17,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:17,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:17,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:17,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:17,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:17,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:17,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:17,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:17,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:17,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:17,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:17,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:17,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:18,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:22,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 12:16:22,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:16:22,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:16:22,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:22,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:16:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:16:22,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 12:16:22,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:22,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:22,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:23,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 12:16:23,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:16:23,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-09-25 12:16:23,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:23,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:23,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:23,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:16:23,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 12:16:23,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:23,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:23,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:23,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:16:23,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:16:23,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 12:16:23,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:23,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:16:23,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:23,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:23,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:23,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:23,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:23,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:16:23,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:23,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:23,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:23,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:23,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:23,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:23,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:16:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:23,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:23,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:23,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:23,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:16:23,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:23,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:23,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:23,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:23,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:23,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:16:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:23,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:23,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:23,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:23,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:23,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:23,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:23,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:16:23,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:23,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:23,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:23,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 12:16:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:23,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:24,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 12:16:24,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:16:24,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-09-25 12:16:24,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:24,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:24,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:16:24,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:16:24,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:16:24,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:24,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:24,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:24,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:16:24,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:24,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 12:16:24,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:24,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:24,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:24,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:24,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:16:24,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:24,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:24,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:24,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:24,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:24,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:16:24,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:24,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:24,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:24,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:24,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:16:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:24,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:24,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:24,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:24,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:16:24,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:24,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:24,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:24,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:24,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:24,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:24,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:16:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:24,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:24,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:24,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:24,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:24,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:24,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:24,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:16:24,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:24,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:24,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:24,586 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 49 proven. 20 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-09-25 12:16:24,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725851187] [2020-09-25 12:16:24,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:24,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 12:16:24,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562051542] [2020-09-25 12:16:24,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 12:16:24,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:24,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 12:16:24,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:16:24,591 INFO L87 Difference]: Start difference. First operand 80 states and 109 transitions. Second operand 15 states. [2020-09-25 12:16:24,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:24,858 INFO L93 Difference]: Finished difference Result 157 states and 235 transitions. [2020-09-25 12:16:24,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:16:24,864 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 101 [2020-09-25 12:16:24,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:24,866 INFO L225 Difference]: With dead ends: 157 [2020-09-25 12:16:24,866 INFO L226 Difference]: Without dead ends: 83 [2020-09-25 12:16:24,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:16:24,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-25 12:16:24,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2020-09-25 12:16:24,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 12:16:24,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2020-09-25 12:16:24,879 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 101 [2020-09-25 12:16:24,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:24,879 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2020-09-25 12:16:24,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 12:16:24,879 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2020-09-25 12:16:24,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 12:16:24,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:24,881 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:24,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:16:24,882 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:24,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:24,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1957044445, now seen corresponding path program 1 times [2020-09-25 12:16:24,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:24,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2831159] [2020-09-25 12:16:24,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:24,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:25,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:25,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:25,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:26,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:26,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:26,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:26,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:26,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:26,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:28,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:28,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking...