/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Fibonacci01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:05:58,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:05:58,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:05:59,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:05:59,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:05:59,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:05:59,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:05:59,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:05:59,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:05:59,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:05:59,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:05:59,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:05:59,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:05:59,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:05:59,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:05:59,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:05:59,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:05:59,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:05:59,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:05:59,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:05:59,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:05:59,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:05:59,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:05:59,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:05:59,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:05:59,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:05:59,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:05:59,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:05:59,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:05:59,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:05:59,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:05:59,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:05:59,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:05:59,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:05:59,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:05:59,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:05:59,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:05:59,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:05:59,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:05:59,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:05:59,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:05:59,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:05:59,158 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:05:59,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:05:59,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:05:59,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:05:59,161 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:05:59,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:05:59,161 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:05:59,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:05:59,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:05:59,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:05:59,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:05:59,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:05:59,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:05:59,162 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:05:59,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:05:59,163 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:05:59,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:05:59,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:05:59,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:05:59,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:05:59,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:05:59,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:05:59,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:05:59,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:05:59,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:05:59,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:05:59,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:05:59,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:05:59,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:05:59,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:05:59,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:05:59,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:05:59,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:05:59,700 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:05:59,701 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:05:59,702 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci01-1.c [2020-09-25 11:05:59,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b663a1d29/ca457e8abf744e31b1ef3c78dc1bbffd/FLAGc2da227ce [2020-09-25 11:06:00,398 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:06:00,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci01-1.c [2020-09-25 11:06:00,406 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b663a1d29/ca457e8abf744e31b1ef3c78dc1bbffd/FLAGc2da227ce [2020-09-25 11:06:00,790 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b663a1d29/ca457e8abf744e31b1ef3c78dc1bbffd [2020-09-25 11:06:00,803 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:06:00,809 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:06:00,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:06:00,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:06:00,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:06:00,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:06:00" (1/1) ... [2020-09-25 11:06:00,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16768517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:00, skipping insertion in model container [2020-09-25 11:06:00,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:06:00" (1/1) ... [2020-09-25 11:06:00,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:06:00,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:06:01,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:06:01,101 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:06:01,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:06:01,136 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:06:01,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:01 WrapperNode [2020-09-25 11:06:01,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:06:01,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:06:01,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:06:01,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:06:01,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:01" (1/1) ... [2020-09-25 11:06:01,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:01" (1/1) ... [2020-09-25 11:06:01,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:01" (1/1) ... [2020-09-25 11:06:01,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:01" (1/1) ... [2020-09-25 11:06:01,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:01" (1/1) ... [2020-09-25 11:06:01,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:01" (1/1) ... [2020-09-25 11:06:01,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:01" (1/1) ... [2020-09-25 11:06:01,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:06:01,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:06:01,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:06:01,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:06:01,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:06:01,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:06:01,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:06:01,343 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-25 11:06:01,343 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:06:01,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:06:01,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:06:01,343 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-25 11:06:01,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:06:01,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:06:01,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:06:01,566 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:06:01,567 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:06:01,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:06:01 BoogieIcfgContainer [2020-09-25 11:06:01,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:06:01,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:06:01,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:06:01,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:06:01,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:06:00" (1/3) ... [2020-09-25 11:06:01,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f295d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:06:01, skipping insertion in model container [2020-09-25 11:06:01,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:01" (2/3) ... [2020-09-25 11:06:01,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f295d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:06:01, skipping insertion in model container [2020-09-25 11:06:01,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:06:01" (3/3) ... [2020-09-25 11:06:01,585 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci01-1.c [2020-09-25 11:06:01,601 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:06:01,614 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:06:01,640 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:06:01,679 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:06:01,679 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:06:01,680 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:06:01,680 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:06:01,680 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:06:01,680 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:06:01,681 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:06:01,681 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:06:01,710 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-09-25 11:06:01,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 11:06:01,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:01,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:01,722 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:01,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:01,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1379859160, now seen corresponding path program 1 times [2020-09-25 11:06:01,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:01,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403353602] [2020-09-25 11:06:01,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:01,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:02,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:02,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 11:06:02,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:02,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 11:06:02,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:02,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:02,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:06:02,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:06:02,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:06:02,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:02,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:02,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:02,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:02,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:02,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:06:02,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:02,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:02,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:02,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:02,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:02,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:02,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:06:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:02,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:02,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:02,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:02,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:02,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:06:02,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:02,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:02,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:02,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:02,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:06:02,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:02,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:06:02,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403353602] [2020-09-25 11:06:02,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:06:02,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:06:02,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955744822] [2020-09-25 11:06:02,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:06:02,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:02,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:06:02,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:06:02,326 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 7 states. [2020-09-25 11:06:02,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:02,542 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-25 11:06:02,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:06:02,545 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-25 11:06:02,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:02,560 INFO L225 Difference]: With dead ends: 50 [2020-09-25 11:06:02,560 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 11:06:02,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:06:02,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 11:06:02,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-25 11:06:02,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 11:06:02,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 11:06:02,619 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2020-09-25 11:06:02,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:02,619 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 11:06:02,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:06:02,620 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 11:06:02,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 11:06:02,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:02,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:02,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:06:02,623 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:02,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:02,624 INFO L82 PathProgramCache]: Analyzing trace with hash -2056866127, now seen corresponding path program 1 times [2020-09-25 11:06:02,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:02,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228004394] [2020-09-25 11:06:02,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:02,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:02,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:02,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 11:06:02,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:02,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 11:06:02,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:02,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:06:02,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:06:02,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:06:02,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:02,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:02,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:02,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:02,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:02,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:06:02,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:02,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:02,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:02,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:02,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:02,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:06:02,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:06:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:02,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:02,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:02,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:02,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:02,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 11:06:02,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:02,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:02,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:02,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:02,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:06:02,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:02,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:06:02,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228004394] [2020-09-25 11:06:02,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:06:02,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:06:02,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470196157] [2020-09-25 11:06:02,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:06:02,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:02,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:06:02,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:06:03,000 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-09-25 11:06:03,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:03,181 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-09-25 11:06:03,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:06:03,182 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-09-25 11:06:03,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:03,184 INFO L225 Difference]: With dead ends: 39 [2020-09-25 11:06:03,184 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 11:06:03,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:06:03,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 11:06:03,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-09-25 11:06:03,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 11:06:03,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 11:06:03,194 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 20 [2020-09-25 11:06:03,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:03,195 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 11:06:03,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:06:03,195 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 11:06:03,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 11:06:03,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:03,197 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 11:06:03,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:06:03,198 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:03,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:03,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1274124978, now seen corresponding path program 1 times [2020-09-25 11:06:03,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:03,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140320232] [2020-09-25 11:06:03,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:03,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:03,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:03,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:03,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 11:06:03,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:03,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-09-25 11:06:03,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:03,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:03,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:06:03,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:06:03,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 11:06:03,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:06:03,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:03,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:03,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:03,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:03,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:03,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:06:03,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:03,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:03,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:03,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:03,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:03,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:03,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:06:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:03,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:03,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:03,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:03,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:06:03,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:03,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 11:06:03,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:03,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:03,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:06:03,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:03,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:06:03,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:03,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:03,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:03,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:03,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:03,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:03,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:06:03,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:03,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:03,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:03,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:03,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:06:03,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:04,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:04,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:04,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:04,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:04,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:04,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:06:04,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:04,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:04,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:04,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:04,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:04,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:04,089 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 11:06:04,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140320232] [2020-09-25 11:06:04,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:04,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:06:04,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317451737] [2020-09-25 11:06:04,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:06:04,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:04,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:06:04,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:06:04,093 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 12 states. [2020-09-25 11:06:04,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:04,404 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-09-25 11:06:04,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:06:04,405 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-09-25 11:06:04,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:04,407 INFO L225 Difference]: With dead ends: 51 [2020-09-25 11:06:04,408 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 11:06:04,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-09-25 11:06:04,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 11:06:04,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-09-25 11:06:04,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 11:06:04,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2020-09-25 11:06:04,421 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 36 [2020-09-25 11:06:04,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:04,421 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2020-09-25 11:06:04,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:06:04,422 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2020-09-25 11:06:04,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 11:06:04,424 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:04,424 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:04,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:06:04,425 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:04,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:04,425 INFO L82 PathProgramCache]: Analyzing trace with hash -2043121517, now seen corresponding path program 1 times [2020-09-25 11:06:04,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:04,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179288120] [2020-09-25 11:06:04,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:04,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:04,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:05,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 11:06:05,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:05,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 926 [2020-09-25 11:06:05,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:05,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:06:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:06:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:06:05,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:05,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:05,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:05,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:05,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:05,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:06:05,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:05,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:05,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:05,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:05,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:05,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:05,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:06:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:05,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:05,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:06:05,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:05,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 11:06:05,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:05,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:05,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:06:05,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:05,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:06:05,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:05,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:05,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:05,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:05,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:05,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:06:05,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:05,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:05,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:05,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:06:05,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:05,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:06:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:05,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:05,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:05,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:05,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:06:05,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:05,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:05,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:05,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:05,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:05,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:05,698 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 11:06:05,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179288120] [2020-09-25 11:06:05,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:05,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:06:05,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413457744] [2020-09-25 11:06:05,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:06:05,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:05,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:06:05,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:06:05,701 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand 12 states. [2020-09-25 11:06:06,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:06,043 INFO L93 Difference]: Finished difference Result 59 states and 76 transitions. [2020-09-25 11:06:06,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:06:06,043 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-09-25 11:06:06,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:06,046 INFO L225 Difference]: With dead ends: 59 [2020-09-25 11:06:06,047 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 11:06:06,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-09-25 11:06:06,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 11:06:06,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2020-09-25 11:06:06,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-25 11:06:06,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-09-25 11:06:06,059 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 37 [2020-09-25 11:06:06,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:06,059 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-09-25 11:06:06,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:06:06,060 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-09-25 11:06:06,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 11:06:06,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:06,062 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:06,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:06:06,063 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:06,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:06,063 INFO L82 PathProgramCache]: Analyzing trace with hash -845339958, now seen corresponding path program 2 times [2020-09-25 11:06:06,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:06,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844367795] [2020-09-25 11:06:06,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:06,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:06,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:06,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:06,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:10,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:10,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 11:06:10,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:06:10,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4057 [2020-09-25 11:06:10,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:10,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:10,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:06:10,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:06:10,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 11:06:10,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:10,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:10,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:10,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:10,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:10,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:10,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:06:10,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:10,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:10,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:10,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:10,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:06:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:10,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:10,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:10,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:10,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:13,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:13,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 11:06:13,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:06:13,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2872 [2020-09-25 11:06:13,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:13,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:13,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:06:13,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:13,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:06:13,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:13,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:13,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:13,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:13,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:13,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:13,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:06:13,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:13,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:13,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:13,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:13,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:06:13,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:13,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:13,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:13,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:13,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:13,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:06:13,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:13,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-25 11:06:13,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:13,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:13,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:06:13,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:13,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:06:13,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:13,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:13,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:13,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:13,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:13,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:13,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:06:13,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:13,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:13,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:06:13,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:13,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:06:13,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:13,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:13,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:13,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:13,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:13,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:13,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:06:13,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:13,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:13,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:13,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:13,521 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 11:06:13,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844367795] [2020-09-25 11:06:13,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:13,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 11:06:13,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92254451] [2020-09-25 11:06:13,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 11:06:13,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:13,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 11:06:13,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:06:13,526 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 14 states. [2020-09-25 11:06:13,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:13,997 INFO L93 Difference]: Finished difference Result 93 states and 135 transitions. [2020-09-25 11:06:13,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 11:06:13,997 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-09-25 11:06:13,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:13,999 INFO L225 Difference]: With dead ends: 93 [2020-09-25 11:06:14,000 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 11:06:14,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-09-25 11:06:14,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 11:06:14,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 45. [2020-09-25 11:06:14,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 11:06:14,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-09-25 11:06:14,016 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 53 [2020-09-25 11:06:14,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:14,017 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-09-25 11:06:14,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 11:06:14,017 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-09-25 11:06:14,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 11:06:14,020 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:14,020 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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] [2020-09-25 11:06:14,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:06:14,021 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:14,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:14,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1985616609, now seen corresponding path program 1 times [2020-09-25 11:06:14,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:14,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771535870] [2020-09-25 11:06:14,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:14,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:14,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:14,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:14,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:14,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:14,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:14,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:15,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:17,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:19,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:19,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 11:06:19,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:06:19,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:06:19,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:19,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:19,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:06:19,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:06:19,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:06:19,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:19,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:19,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:19,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:19,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:19,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:19,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:19,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:19,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:19,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:19,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:06:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:19,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:19,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:19,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:19,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:19,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:19,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:19,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:19,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:22,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:22,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 11:06:22,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:06:22,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3298 [2020-09-25 11:06:22,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:22,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:06:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 11:06:22,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:22,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:22,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:22,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:22,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:22,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:22,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:06:22,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:22,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:06:22,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:22,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:06:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:22,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:22,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:22,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:22,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:22,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:06:22,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:06:22,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-09-25 11:06:22,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:22,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:06:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:06:22,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:23,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:23,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:23,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:23,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:23,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:23,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:06:23,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:23,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:23,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:06:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:23,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:06:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:23,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:23,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:23,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:23,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:23,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:06:23,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:23,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:23,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:23,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:23,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:06:23,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 39 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 11:06:23,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771535870] [2020-09-25 11:06:23,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:23,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:06:23,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137101329] [2020-09-25 11:06:23,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:06:23,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:23,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:06:23,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:06:23,066 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 15 states. [2020-09-25 11:06:23,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:23,286 INFO L93 Difference]: Finished difference Result 89 states and 117 transitions. [2020-09-25 11:06:23,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:06:23,286 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 11:06:23,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:23,288 INFO L225 Difference]: With dead ends: 89 [2020-09-25 11:06:23,288 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 11:06:23,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:06:23,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 11:06:23,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 45. [2020-09-25 11:06:23,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 11:06:23,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2020-09-25 11:06:23,298 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 56 [2020-09-25 11:06:23,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:23,298 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2020-09-25 11:06:23,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:06:23,299 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2020-09-25 11:06:23,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 11:06:23,301 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:23,301 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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] [2020-09-25 11:06:23,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:06:23,302 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:23,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:23,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1799591387, now seen corresponding path program 2 times [2020-09-25 11:06:23,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:23,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437271217] [2020-09-25 11:06:23,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:23,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:23,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:23,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:23,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:25,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:25,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:06:25,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:06:25,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2047 [2020-09-25 11:06:25,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:25,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:25,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:06:25,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:06:25,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 11:06:25,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:25,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:25,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:25,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:25,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:25,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:25,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:25,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:25,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:25,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:25,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:25,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:06:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:25,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:25,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:25,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:25,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:26,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:26,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:06:26,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:06:26,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1469 [2020-09-25 11:06:26,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:26,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:06:26,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:26,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:06:26,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:26,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:26,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:26,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:26,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:26,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:26,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:06:26,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:26,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:06:26,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:26,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:06:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:26,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:27,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:27,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:27,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:06:27,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:27,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 11:06:27,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:27,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:27,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:06:27,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:27,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:06:27,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:27,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:27,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:27,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:27,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:27,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:27,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:06:27,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:27,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:27,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:06:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:06:27,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:27,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:27,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:27,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:27,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:27,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:27,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:06:27,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:27,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 11:06:27,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437271217] [2020-09-25 11:06:27,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:27,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:06:27,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604586300] [2020-09-25 11:06:27,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:06:27,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:27,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:06:27,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:06:27,307 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 15 states. [2020-09-25 11:06:27,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:27,799 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2020-09-25 11:06:27,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 11:06:27,799 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-09-25 11:06:27,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:27,801 INFO L225 Difference]: With dead ends: 67 [2020-09-25 11:06:27,801 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 11:06:27,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2020-09-25 11:06:27,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 11:06:27,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 51. [2020-09-25 11:06:27,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 11:06:27,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2020-09-25 11:06:27,810 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 54 [2020-09-25 11:06:27,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:27,811 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2020-09-25 11:06:27,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:06:27,811 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2020-09-25 11:06:27,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 11:06:27,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:27,820 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2020-09-25 11:06:27,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:06:27,820 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:27,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:27,821 INFO L82 PathProgramCache]: Analyzing trace with hash 2003700030, now seen corresponding path program 3 times [2020-09-25 11:06:27,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:27,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142047669] [2020-09-25 11:06:27,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:27,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:27,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:27,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:28,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:29,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:29,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 11:06:29,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:06:29,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1168 [2020-09-25 11:06:29,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:29,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:29,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:06:29,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:06:29,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 11:06:29,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:29,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:29,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:29,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:29,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:29,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:29,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:29,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:29,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:29,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:29,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:29,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:06:29,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:06:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:29,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:29,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:29,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:29,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:30,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 11:06:30,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:06:30,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 995 [2020-09-25 11:06:30,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:30,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:30,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:06:30,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:30,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 11:06:30,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:30,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:30,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:30,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:30,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:30,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:06:30,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:30,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:30,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:30,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:30,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:06:30,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:30,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:06:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:30,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:30,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:06:30,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:30,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 11:06:30,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:30,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:30,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:06:30,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:30,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:06:30,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:30,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:30,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:30,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:30,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:30,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:06:30,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:30,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:30,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:06:30,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:30,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:30,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:30,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:06:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:30,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:30,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:30,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:30,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:06:30,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:30,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:30,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:30,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:30,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:30,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:30,361 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-25 11:06:30,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142047669] [2020-09-25 11:06:30,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:30,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 11:06:30,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917520756] [2020-09-25 11:06:30,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 11:06:30,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:30,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 11:06:30,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:06:30,363 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand 14 states. [2020-09-25 11:06:31,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:31,026 INFO L93 Difference]: Finished difference Result 95 states and 130 transitions. [2020-09-25 11:06:31,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 11:06:31,027 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-09-25 11:06:31,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:31,030 INFO L225 Difference]: With dead ends: 95 [2020-09-25 11:06:31,030 INFO L226 Difference]: Without dead ends: 89 [2020-09-25 11:06:31,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=995, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 11:06:31,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-25 11:06:31,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 73. [2020-09-25 11:06:31,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 11:06:31,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 108 transitions. [2020-09-25 11:06:31,046 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 108 transitions. Word has length 55 [2020-09-25 11:06:31,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:31,047 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 108 transitions. [2020-09-25 11:06:31,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 11:06:31,047 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 108 transitions. [2020-09-25 11:06:31,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 11:06:31,049 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:31,049 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:31,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:06:31,049 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:31,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:31,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1288436502, now seen corresponding path program 3 times [2020-09-25 11:06:31,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:31,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401590491] [2020-09-25 11:06:31,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:31,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:31,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:31,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:31,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:31,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:31,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:32,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:32,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 11:06:32,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:06:32,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1852 [2020-09-25 11:06:32,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:32,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 11:06:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:06:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 11:06:32,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:32,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:32,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:32,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:32,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:32,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:32,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:32,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:32,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:32,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:32,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:32,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:32,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:32,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:06:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:32,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:32,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:32,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:33,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:33,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:33,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:34,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:34,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 11:06:34,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:06:34,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1553 [2020-09-25 11:06:34,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:34,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:34,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:06:34,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:34,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:06:34,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:34,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:34,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:34,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:34,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:34,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:06:34,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:34,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 11:06:34,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:34,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:34,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:06:34,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:34,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:06:34,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:34,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:34,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:34,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:34,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:34,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:34,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:06:34,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:34,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:34,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:34,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:34,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:06:34,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:34,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:34,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:34,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:34,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:34,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:34,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:06:34,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:34,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:34,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:34,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:06:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:34,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:34,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:34,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:34,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:34,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:06:34,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:34,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:34,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:34,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:34,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:34,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 3 proven. 31 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 11:06:34,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401590491] [2020-09-25 11:06:34,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:34,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:06:34,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323358077] [2020-09-25 11:06:34,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:06:34,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:34,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:06:34,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:06:34,901 INFO L87 Difference]: Start difference. First operand 73 states and 108 transitions. Second operand 15 states. [2020-09-25 11:06:35,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:35,355 INFO L93 Difference]: Finished difference Result 99 states and 163 transitions. [2020-09-25 11:06:35,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:06:35,358 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-09-25 11:06:35,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:35,362 INFO L225 Difference]: With dead ends: 99 [2020-09-25 11:06:35,362 INFO L226 Difference]: Without dead ends: 93 [2020-09-25 11:06:35,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-09-25 11:06:35,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-25 11:06:35,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2020-09-25 11:06:35,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 11:06:35,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 129 transitions. [2020-09-25 11:06:35,381 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 129 transitions. Word has length 53 [2020-09-25 11:06:35,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:35,381 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 129 transitions. [2020-09-25 11:06:35,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:06:35,382 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 129 transitions. [2020-09-25 11:06:35,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 11:06:35,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:35,384 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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] [2020-09-25 11:06:35,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 11:06:35,385 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:35,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:35,385 INFO L82 PathProgramCache]: Analyzing trace with hash -494889179, now seen corresponding path program 4 times [2020-09-25 11:06:35,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:35,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096476542] [2020-09-25 11:06:35,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:35,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:35,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:35,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:35,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:36,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:37,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:37,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:06:37,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:06:37,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2542 [2020-09-25 11:06:37,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:37,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:37,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:06:37,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:06:37,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 11:06:37,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:37,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:37,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:37,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:37,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:37,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:37,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:37,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:37,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:37,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:37,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:37,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:37,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:06:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:37,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:37,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:37,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:38,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:38,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:39,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:39,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:06:39,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:06:39,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1929 [2020-09-25 11:06:39,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:39,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:39,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:06:39,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:39,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:06:39,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:39,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:39,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:40,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:40,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:40,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:06:40,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:40,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 11:06:40,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:40,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:06:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:06:40,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:40,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:40,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:40,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:40,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:40,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:40,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:06:40,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:40,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:40,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:40,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:40,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:06:40,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:40,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:40,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:40,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:40,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:40,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:40,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:06:40,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:40,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:40,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:40,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:40,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:40,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:40,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:06:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:40,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:40,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:40,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:40,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:40,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:06:40,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:40,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:40,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:40,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:06:40,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 5 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 11:06:40,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096476542] [2020-09-25 11:06:40,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:40,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 11:06:40,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183866782] [2020-09-25 11:06:40,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 11:06:40,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:40,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 11:06:40,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:06:40,329 INFO L87 Difference]: Start difference. First operand 81 states and 129 transitions. Second operand 16 states. [2020-09-25 11:06:40,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:40,719 INFO L93 Difference]: Finished difference Result 161 states and 278 transitions. [2020-09-25 11:06:40,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:06:40,725 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 54 [2020-09-25 11:06:40,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:40,727 INFO L225 Difference]: With dead ends: 161 [2020-09-25 11:06:40,727 INFO L226 Difference]: Without dead ends: 89 [2020-09-25 11:06:40,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2020-09-25 11:06:40,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-25 11:06:40,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2020-09-25 11:06:40,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 11:06:40,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 132 transitions. [2020-09-25 11:06:40,741 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 132 transitions. Word has length 54 [2020-09-25 11:06:40,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:40,742 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 132 transitions. [2020-09-25 11:06:40,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 11:06:40,742 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 132 transitions. [2020-09-25 11:06:40,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 11:06:40,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:40,744 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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] [2020-09-25 11:06:40,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 11:06:40,744 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:40,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:40,744 INFO L82 PathProgramCache]: Analyzing trace with hash 847598467, now seen corresponding path program 5 times [2020-09-25 11:06:40,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:40,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698061226] [2020-09-25 11:06:40,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:40,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:40,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:40,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:40,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:41,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:43,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:43,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:06:43,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:06:43,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2793 [2020-09-25 11:06:43,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:43,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:43,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:06:43,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:06:43,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 11:06:43,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:43,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:43,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:43,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:43,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:43,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:43,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:43,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:43,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:43,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:43,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:43,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:43,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:43,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:06:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:43,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:43,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:43,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:43,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:44,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:45,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:45,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:06:45,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:06:45,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2086 [2020-09-25 11:06:45,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:45,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:45,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:06:45,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:45,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:06:45,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:45,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:45,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:45,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:45,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:06:45,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:45,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 11:06:45,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:45,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:45,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:06:45,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:45,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:06:45,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:45,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:45,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:45,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:45,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:45,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:06:45,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:45,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:06:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:45,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:45,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:06:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:45,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:45,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:45,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:45,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:45,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:06:45,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:45,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:45,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:45,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:45,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:45,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:45,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:06:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:45,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:45,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:45,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:45,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:45,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:06:45,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:45,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:45,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:45,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:45,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:06:45,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:45,968 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 8 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 11:06:45,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698061226] [2020-09-25 11:06:45,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:45,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 11:06:45,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742993201] [2020-09-25 11:06:45,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 11:06:45,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:45,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 11:06:45,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:06:45,971 INFO L87 Difference]: Start difference. First operand 83 states and 132 transitions. Second operand 16 states. [2020-09-25 11:06:46,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:46,681 INFO L93 Difference]: Finished difference Result 123 states and 212 transitions. [2020-09-25 11:06:46,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 11:06:46,686 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 54 [2020-09-25 11:06:46,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:46,690 INFO L225 Difference]: With dead ends: 123 [2020-09-25 11:06:46,691 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 11:06:46,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=209, Invalid=847, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 11:06:46,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 11:06:46,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 99. [2020-09-25 11:06:46,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-09-25 11:06:46,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 180 transitions. [2020-09-25 11:06:46,724 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 180 transitions. Word has length 54 [2020-09-25 11:06:46,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:46,724 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 180 transitions. [2020-09-25 11:06:46,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 11:06:46,724 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 180 transitions. [2020-09-25 11:06:46,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 11:06:46,726 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:46,727 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2020-09-25 11:06:46,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 11:06:46,730 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:46,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:46,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1275966376, now seen corresponding path program 6 times [2020-09-25 11:06:46,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:46,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431279282] [2020-09-25 11:06:46,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:46,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:46,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:46,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:50,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:50,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 11:06:50,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:06:50,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4110 [2020-09-25 11:06:50,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:50,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:50,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:06:50,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:06:50,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 11:06:50,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:50,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:50,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:50,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:50,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:50,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:50,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:50,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:50,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:50,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:50,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:50,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:50,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:50,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:06:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:50,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:50,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:51,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking...