/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_20-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:06:55,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:06:55,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:06:56,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:06:56,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:06:56,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:06:56,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:06:56,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:06:56,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:06:56,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:06:56,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:06:56,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:06:56,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:06:56,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:06:56,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:06:56,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:06:56,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:06:56,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:06:56,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:06:56,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:06:56,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:06:56,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:06:56,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:06:56,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:06:56,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:06:56,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:06:56,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:06:56,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:06:56,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:06:56,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:06:56,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:06:56,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:06:56,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:06:56,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:06:56,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:06:56,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:06:56,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:06:56,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:06:56,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:06:56,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:06:56,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:06:56,070 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:06:56,139 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:06:56,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:06:56,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:06:56,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:06:56,144 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:06:56,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:06:56,144 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:06:56,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:06:56,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:06:56,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:06:56,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:06:56,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:06:56,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:06:56,149 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:06:56,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:06:56,150 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:06:56,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:06:56,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:06:56,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:06:56,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:06:56,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:06:56,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:06:56,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:06:56,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:06:56,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:06:56,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:06:56,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:06:56,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:06:56,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:06:56,154 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:06:56,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:06:56,686 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:06:56,691 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:06:56,693 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:06:56,694 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:06:56,695 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_20-1.c [2020-09-25 11:06:56,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5946b1a86/1b3e0b7227ef41158b2ff057a7ff93ed/FLAG5210236fe [2020-09-25 11:06:57,331 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:06:57,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_20-1.c [2020-09-25 11:06:57,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5946b1a86/1b3e0b7227ef41158b2ff057a7ff93ed/FLAG5210236fe [2020-09-25 11:06:57,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5946b1a86/1b3e0b7227ef41158b2ff057a7ff93ed [2020-09-25 11:06:57,725 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:06:57,732 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:06:57,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:06:57,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:06:57,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:06:57,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:06:57" (1/1) ... [2020-09-25 11:06:57,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db123a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:57, skipping insertion in model container [2020-09-25 11:06:57,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:06:57" (1/1) ... [2020-09-25 11:06:57,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:06:57,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:06:58,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:06:58,006 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:06:58,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:06:58,057 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:06:58,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:58 WrapperNode [2020-09-25 11:06:58,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:06:58,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:06:58,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:06:58,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:06:58,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:58" (1/1) ... [2020-09-25 11:06:58,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:58" (1/1) ... [2020-09-25 11:06:58,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:58" (1/1) ... [2020-09-25 11:06:58,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:58" (1/1) ... [2020-09-25 11:06:58,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:58" (1/1) ... [2020-09-25 11:06:58,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:58" (1/1) ... [2020-09-25 11:06:58,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:58" (1/1) ... [2020-09-25 11:06:58,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:06:58,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:06:58,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:06:58,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:06:58,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:58" (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 11:06:58,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:06:58,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:06:58,242 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 11:06:58,242 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:06:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:06:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:06:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 11:06:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:06:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:06:58,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:06:58,450 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:06:58,451 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:06:58,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:06:58 BoogieIcfgContainer [2020-09-25 11:06:58,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:06:58,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:06:58,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:06:58,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:06:58,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:06:57" (1/3) ... [2020-09-25 11:06:58,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4b14b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:06:58, skipping insertion in model container [2020-09-25 11:06:58,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:58" (2/3) ... [2020-09-25 11:06:58,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4b14b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:06:58, skipping insertion in model container [2020-09-25 11:06:58,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:06:58" (3/3) ... [2020-09-25 11:06:58,467 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_20-1.c [2020-09-25 11:06:58,481 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:06:58,492 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:06:58,535 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:06:58,583 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:06:58,583 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:06:58,584 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:06:58,584 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:06:58,584 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:06:58,585 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:06:58,585 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:06:58,585 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:06:58,614 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 11:06:58,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 11:06:58,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:58,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:58,630 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:58,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:58,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 11:06:58,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:58,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40442700] [2020-09-25 11:06:58,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:58,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:58,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:59,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:59,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:59,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-25 11:06:59,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:59,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:06:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:59,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:06:59,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:59,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:59,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:59,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:59,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:06:59,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:59,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:59,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:59,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:59,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:59,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:06:59,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:06:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:59,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:59,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:59,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:59,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:06:59,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:59,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:06:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:59,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:06:59,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:59,260 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 11:06:59,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40442700] [2020-09-25 11:06:59,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:06:59,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:06:59,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983394907] [2020-09-25 11:06:59,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:06:59,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:59,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:06:59,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:06:59,297 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 11:06:59,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:59,392 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 11:06:59,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:06:59,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 11:06:59,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:59,409 INFO L225 Difference]: With dead ends: 44 [2020-09-25 11:06:59,410 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 11:06:59,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:06:59,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 11:06:59,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 11:06:59,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 11:06:59,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 11:06:59,471 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 11:06:59,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:59,472 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 11:06:59,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:06:59,472 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 11:06:59,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 11:06:59,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:59,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:59,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:06:59,476 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:59,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:59,477 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 11:06:59,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:59,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549910810] [2020-09-25 11:06:59,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:59,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:59,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 11:06:59,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:59,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 11:06:59,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:59,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:59,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:59,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:06:59,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:59,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:59,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:59,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:59,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:59,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:59,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:06:59,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:59,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:59,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:59,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:59,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:59,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:59,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:06:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:59,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:59,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:59,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:59,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:06:59,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:59,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:06:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:06:59,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:59,835 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 11:06:59,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549910810] [2020-09-25 11:06:59,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:06:59,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:06:59,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173361166] [2020-09-25 11:06:59,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:06:59,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:59,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:06:59,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:06:59,840 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 11:06:59,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:59,896 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 11:06:59,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:06:59,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 11:06:59,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:59,898 INFO L225 Difference]: With dead ends: 36 [2020-09-25 11:06:59,899 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 11:06:59,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:06:59,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 11:06:59,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 11:06:59,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 11:06:59,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 11:06:59,909 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 11:06:59,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:59,909 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 11:06:59,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:06:59,910 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 11:06:59,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 11:06:59,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:59,912 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] [2020-09-25 11:06:59,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:06:59,912 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:59,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:59,913 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 11:06:59,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:59,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422444906] [2020-09-25 11:06:59,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:59,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:00,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:00,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:01,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:01,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 11:07:01,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:07:01,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1861 [2020-09-25 11:07:01,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:01,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:01,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:01,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:01,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:07:01,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:07:01,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:01,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:01,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:01,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:01,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:01,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:07:01,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:01,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:01,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:01,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:01,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:01,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:01,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:01,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:01,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:01,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:02,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:02,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:02,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-25 11:07:02,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:02,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:02,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:02,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:02,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:02,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:02,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:02,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:02,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:02,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:07:02,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:02,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:02,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:02,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:02,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:02,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:02,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:02,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:02,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:02,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:02,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:07:02,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:02,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:02,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:02,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:02,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:02,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:02,148 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 11:07:02,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422444906] [2020-09-25 11:07:02,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:02,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:07:02,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044360088] [2020-09-25 11:07:02,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:07:02,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:02,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:07:02,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:07:02,159 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 11:07:02,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:02,271 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-25 11:07:02,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:07:02,272 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 11:07:02,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:02,274 INFO L225 Difference]: With dead ends: 44 [2020-09-25 11:07:02,274 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 11:07:02,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:07:02,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 11:07:02,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-25 11:07:02,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 11:07:02,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-25 11:07:02,286 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-25 11:07:02,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:02,287 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-25 11:07:02,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:07:02,287 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-25 11:07:02,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 11:07:02,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:02,290 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 11:07:02,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:07:02,290 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:02,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:02,291 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 11:07:02,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:02,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681759129] [2020-09-25 11:07:02,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:02,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:04,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:04,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 11:07:04,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:07:04,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1752 [2020-09-25 11:07:04,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:04,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:04,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:04,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:07:04,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:04,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:04,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:04,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:04,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:04,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:04,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:07:04,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:04,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:04,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:04,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:04,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:04,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:04,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:04,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:04,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:04,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:04,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:04,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:04,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:07:04,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:07:04,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-09-25 11:07:04,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:04,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:04,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:04,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:04,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:07:04,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:04,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:04,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:04,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:04,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:04,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:04,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:07:04,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:04,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:04,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:04,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:04,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:04,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:04,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:04,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:04,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:04,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:04,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:04,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:07:04,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:04,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:04,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:04,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:04,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:04,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:04,666 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 11:07:04,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681759129] [2020-09-25 11:07:04,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:04,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:07:04,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210839016] [2020-09-25 11:07:04,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:04,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:04,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:04,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:04,669 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 7 states. [2020-09-25 11:07:04,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:04,806 INFO L93 Difference]: Finished difference Result 88 states and 137 transitions. [2020-09-25 11:07:04,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:07:04,807 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 11:07:04,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:04,810 INFO L225 Difference]: With dead ends: 88 [2020-09-25 11:07:04,811 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 11:07:04,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:07:04,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 11:07:04,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 11:07:04,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 11:07:04,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2020-09-25 11:07:04,827 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 35 [2020-09-25 11:07:04,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:04,828 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2020-09-25 11:07:04,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:04,828 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2020-09-25 11:07:04,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 11:07:04,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:04,832 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] [2020-09-25 11:07:04,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:07:04,833 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:04,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:04,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-25 11:07:04,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:04,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996316995] [2020-09-25 11:07:04,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:04,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:04,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:04,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:04,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:05,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:05,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:05,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:08,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:09,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:09,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 11:07:09,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:07:09,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:07:09,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:09,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:09,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:09,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:09,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 11:07:09,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:09,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:09,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:09,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:09,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:09,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:09,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:09,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:09,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:09,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:09,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:09,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:09,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:09,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:09,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:09,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:10,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:10,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:10,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:13,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:07:13,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:07:13,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3235 [2020-09-25 11:07:13,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:13,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:13,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:13,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:13,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:07:13,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:13,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:13,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:13,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:13,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:13,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 11:07:13,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:13,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:13,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:13,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:13,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:13,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:13,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:13,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:13,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:13,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:13,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:07:13,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:13,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:13,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:13,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:13,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:13,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:07:13,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:13,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:13,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:13,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:13,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:13,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:13,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:13,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:13,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:13,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:13,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:13,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:07:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:13,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:13,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:13,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:13,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:07:13,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:13,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:13,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:13,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:13,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:13,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:13,410 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 11:07:13,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996316995] [2020-09-25 11:07:13,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:13,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:07:13,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768046012] [2020-09-25 11:07:13,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:13,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:13,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:13,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:13,414 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand 7 states. [2020-09-25 11:07:13,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:13,540 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-09-25 11:07:13,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:07:13,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 11:07:13,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:13,548 INFO L225 Difference]: With dead ends: 76 [2020-09-25 11:07:13,549 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 11:07:13,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:07:13,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 11:07:13,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2020-09-25 11:07:13,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 11:07:13,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 81 transitions. [2020-09-25 11:07:13,579 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 81 transitions. Word has length 51 [2020-09-25 11:07:13,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:13,584 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 81 transitions. [2020-09-25 11:07:13,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:13,585 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 81 transitions. [2020-09-25 11:07:13,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 11:07:13,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:13,596 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:13,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:07:13,597 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:13,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:13,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1086233509, now seen corresponding path program 2 times [2020-09-25 11:07:13,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:13,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95977660] [2020-09-25 11:07:13,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:13,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:16,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:16,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:16,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:16,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:17,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:17,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:17,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:17,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:17,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:18,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:18,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:18,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:18,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:18,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 11:07:18,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 11:07:18,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:07:18,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:18,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:18,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:07:18,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:18,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 11:07:18,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:18,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:18,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:18,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:18,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:18,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:18,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:18,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:18,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:18,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:18,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:18,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:18,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:18,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:18,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:18,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:18,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:18,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:18,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:20,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:21,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:23,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 11:07:23,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:07:23,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 11:07:23,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:23,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:23,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:07:23,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:07:23,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 11:07:23,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:23,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:23,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:23,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:23,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:23,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 11:07:23,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:23,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:07:23,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:23,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:23,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:23,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:23,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:23,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:07:23,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:23,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:23,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:23,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:23,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:23,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:23,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:23,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:23,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:23,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:23,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:07:23,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:23,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:23,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:23,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:23,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:23,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:23,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:07:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:23,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:24,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:24,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:24,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:24,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:26,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:07:26,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:07:26,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2234 [2020-09-25 11:07:26,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:26,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:07:26,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:26,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:26,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:26,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:26,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:26,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 11:07:26,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:26,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:26,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:26,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:26,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:26,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:26,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:26,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:26,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:26,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:26,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:26,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:26,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:26,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:26,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:26,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:26,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:26,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:26,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:26,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:26,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:26,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:26,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:26,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:26,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:26,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:26,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:26,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:07:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:26,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:26,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:26,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:26,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:07:26,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:26,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:26,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:26,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:26,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:26,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 58 proven. 66 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-25 11:07:26,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95977660] [2020-09-25 11:07:26,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:26,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:07:26,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145073332] [2020-09-25 11:07:26,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:07:26,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:26,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:07:26,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:07:26,385 INFO L87 Difference]: Start difference. First operand 58 states and 81 transitions. Second operand 11 states. [2020-09-25 11:07:26,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:26,721 INFO L93 Difference]: Finished difference Result 125 states and 194 transitions. [2020-09-25 11:07:26,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:07:26,723 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2020-09-25 11:07:26,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:26,727 INFO L225 Difference]: With dead ends: 125 [2020-09-25 11:07:26,728 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 11:07:26,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:07:26,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 11:07:26,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 11:07:26,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 11:07:26,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-25 11:07:26,752 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 85 [2020-09-25 11:07:26,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:26,752 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-25 11:07:26,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:07:26,752 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-25 11:07:26,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 11:07:26,758 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:26,758 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:26,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:07:26,760 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:26,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:26,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 3 times [2020-09-25 11:07:26,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:26,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699602426] [2020-09-25 11:07:26,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:26,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:27,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:27,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:27,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:27,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:27,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:27,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:28,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:28,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:31,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:31,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 11:07:31,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:07:31,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 11:07:31,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:31,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:31,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:07:31,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:07:31,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 11:07:31,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:31,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:31,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:31,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:31,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:31,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:31,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:31,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:31,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:31,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:31,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:31,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:31,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:31,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:31,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:31,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:31,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:31,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:32,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:32,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:33,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:33,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:33,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:36,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:36,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 11:07:36,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-25 11:07:36,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 11:07:36,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:36,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:36,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:07:36,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 11:07:36,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 11:07:36,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:36,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:36,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:36,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:36,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 11:07:36,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:36,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:07:36,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:36,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:36,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:36,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:36,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:36,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:36,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:36,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:36,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:36,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:07:36,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:36,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:07:36,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:36,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:36,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:36,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:36,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:36,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:36,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:36,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:36,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:36,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:36,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:36,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:07:36,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:36,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:36,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:36,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:36,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:36,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:36,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:36,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:36,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:36,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:36,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:36,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:36,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:36,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:36,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:36,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:36,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:36,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:36,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:07:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:36,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:36,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:36,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:36,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:36,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:07:36,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:36,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:36,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:36,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:36,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:36,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:36,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 11:07:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:36,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:36,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:39,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:39,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 11:07:39,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:07:39,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2865 [2020-09-25 11:07:39,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:39,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:39,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:07:39,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:07:39,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 11:07:39,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:39,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:39,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:39,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:39,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:39,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:39,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:40,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:40,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 11:07:40,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:07:40,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-09-25 11:07:40,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:40,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:40,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:40,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:40,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 11:07:40,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:40,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:40,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:40,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:40,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:07:40,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:40,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:07:40,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:40,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:40,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:40,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:40,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:07:40,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:40,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:40,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:40,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:40,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:40,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:40,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:40,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:40,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:40,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:40,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:40,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:40,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:40,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:40,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:40,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:40,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:40,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:40,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:07:40,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:40,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:40,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:40,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:40,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:40,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:40,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:07:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:40,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:40,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:40,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:40,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:40,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:40,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:07:40,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:40,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:40,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:40,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:40,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:40,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:40,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 11:07:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:40,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:40,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:40,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:40,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:40,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:07:40,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:40,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:40,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:40,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:40,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:40,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:41,045 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 219 proven. 12 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-09-25 11:07:41,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699602426] [2020-09-25 11:07:41,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:41,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:07:41,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389126553] [2020-09-25 11:07:41,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:07:41,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:41,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:07:41,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:07:41,047 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 8 states. [2020-09-25 11:07:41,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:41,269 INFO L93 Difference]: Finished difference Result 107 states and 135 transitions. [2020-09-25 11:07:41,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:07:41,270 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-09-25 11:07:41,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:41,271 INFO L225 Difference]: With dead ends: 107 [2020-09-25 11:07:41,272 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 11:07:41,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:07:41,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 11:07:41,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2020-09-25 11:07:41,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 11:07:41,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-09-25 11:07:41,280 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 123 [2020-09-25 11:07:41,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:41,281 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-09-25 11:07:41,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:07:41,281 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-09-25 11:07:41,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 11:07:41,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:41,282 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:41,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:07:41,283 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:41,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:41,283 INFO L82 PathProgramCache]: Analyzing trace with hash 866676589, now seen corresponding path program 4 times [2020-09-25 11:07:41,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:41,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011797004] [2020-09-25 11:07:41,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:41,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:41,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:41,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:41,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:43,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:46,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:46,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 11:07:46,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:07:46,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:07:46,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:46,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:07:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 11:07:46,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:46,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:46,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:46,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:46,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:46,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:46,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:46,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:46,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:46,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:46,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:46,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:46,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:46,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:46,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:46,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:51,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 11:07:51,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:07:51,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:07:51,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:51,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:51,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:07:51,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:51,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 11:07:51,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:51,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:51,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:51,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 11:07:51,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:51,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:07:51,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:51,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:07:51,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:51,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:51,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking...