/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:23:11,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:23:11,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:23:11,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:23:11,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:23:11,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:23:11,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:23:11,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:23:11,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:23:11,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:23:11,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:23:11,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:23:11,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:23:11,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:23:11,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:23:11,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:23:11,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:23:11,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:23:11,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:23:11,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:23:11,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:23:11,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:23:11,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:23:11,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:23:11,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:23:11,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:23:11,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:23:11,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:23:11,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:23:11,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:23:11,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:23:11,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:23:11,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:23:11,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:23:11,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:23:11,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:23:11,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:23:11,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:23:11,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:23:11,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:23:11,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:23:11,181 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 13:23:11,228 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:23:11,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:23:11,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:23:11,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:23:11,231 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:23:11,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:23:11,232 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:23:11,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:23:11,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:23:11,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:23:11,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:23:11,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:23:11,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:23:11,235 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:23:11,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:23:11,235 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:23:11,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:23:11,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:23:11,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:23:11,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:23:11,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:23:11,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:23:11,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:23:11,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:23:11,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:23:11,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:23:11,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:23:11,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:23:11,238 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:23:11,238 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:23:11,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:23:11,672 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:23:11,676 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:23:11,678 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:23:11,679 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:23:11,680 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c [2020-09-25 13:23:11,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c07f892fc/dd9c542483c64e5da85f31eaab9285ec/FLAG35bfc97eb [2020-09-25 13:23:12,276 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:23:12,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c [2020-09-25 13:23:12,286 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c07f892fc/dd9c542483c64e5da85f31eaab9285ec/FLAG35bfc97eb [2020-09-25 13:23:12,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c07f892fc/dd9c542483c64e5da85f31eaab9285ec [2020-09-25 13:23:12,649 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:23:12,654 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:23:12,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:23:12,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:23:12,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:23:12,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:23:12" (1/1) ... [2020-09-25 13:23:12,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e2873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:12, skipping insertion in model container [2020-09-25 13:23:12,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:23:12" (1/1) ... [2020-09-25 13:23:12,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:23:12,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:23:12,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:23:12,928 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:23:12,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:23:12,967 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:23:12,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:12 WrapperNode [2020-09-25 13:23:12,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:23:12,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:23:12,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:23:12,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:23:12,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:12" (1/1) ... [2020-09-25 13:23:12,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:12" (1/1) ... [2020-09-25 13:23:13,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:12" (1/1) ... [2020-09-25 13:23:13,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:12" (1/1) ... [2020-09-25 13:23:13,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:12" (1/1) ... [2020-09-25 13:23:13,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:12" (1/1) ... [2020-09-25 13:23:13,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:12" (1/1) ... [2020-09-25 13:23:13,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:23:13,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:23:13,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:23:13,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:23:13,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:12" (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 13:23:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:23:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:23:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 13:23:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 13:23:13,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:23:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:23:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:23:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 13:23:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 13:23:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:23:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:23:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:23:13,472 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:23:13,473 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:23:13,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:23:13 BoogieIcfgContainer [2020-09-25 13:23:13,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:23:13,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:23:13,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:23:13,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:23:13,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:23:12" (1/3) ... [2020-09-25 13:23:13,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d42dd37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:23:13, skipping insertion in model container [2020-09-25 13:23:13,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:12" (2/3) ... [2020-09-25 13:23:13,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d42dd37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:23:13, skipping insertion in model container [2020-09-25 13:23:13,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:23:13" (3/3) ... [2020-09-25 13:23:13,510 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-1.c [2020-09-25 13:23:13,535 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:23:13,546 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:23:13,581 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:23:13,614 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:23:13,614 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:23:13,615 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:23:13,615 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:23:13,615 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:23:13,615 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:23:13,615 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:23:13,616 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:23:13,640 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 13:23:13,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 13:23:13,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:13,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:13,650 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:13,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:13,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 13:23:13,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:13,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093184384] [2020-09-25 13:23:13,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:13,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:13,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:23:13,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:13,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 13:23:13,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:13,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:13,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:13,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:13,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:23:13,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:23:13,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:13,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:13,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:13,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:13,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:23:13,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:13,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:13,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:13,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:13,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:13,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:13,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:13,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:13,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:13,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:13,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:23:13,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:13,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:13,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:13,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:13,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:23:14,010 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 13:23:14,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093184384] [2020-09-25 13:23:14,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:23:14,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:23:14,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649284094] [2020-09-25 13:23:14,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:23:14,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:14,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:23:14,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:23:14,039 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 13:23:14,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:14,174 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 13:23:14,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:23:14,177 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 13:23:14,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:14,191 INFO L225 Difference]: With dead ends: 58 [2020-09-25 13:23:14,192 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 13:23:14,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:23:14,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 13:23:14,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 13:23:14,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 13:23:14,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 13:23:14,257 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 13:23:14,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:14,258 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 13:23:14,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:23:14,258 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 13:23:14,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 13:23:14,260 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:14,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:14,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:23:14,261 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:14,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:14,261 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 13:23:14,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:14,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935621623] [2020-09-25 13:23:14,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:14,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:14,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:23:14,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:14,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 13:23:14,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:14,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:14,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:14,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:14,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:14,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:14,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:14,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:14,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:14,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:14,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:14,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:14,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:14,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:14,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:14,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:14,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:14,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:14,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 13:23:14,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:14,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:14,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:14,465 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 13:23:14,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935621623] [2020-09-25 13:23:14,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:23:14,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:23:14,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809077322] [2020-09-25 13:23:14,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:23:14,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:14,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:23:14,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:23:14,470 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 13:23:14,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:14,549 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 13:23:14,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:23:14,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 13:23:14,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:14,551 INFO L225 Difference]: With dead ends: 50 [2020-09-25 13:23:14,551 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 13:23:14,553 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 13:23:14,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 13:23:14,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 13:23:14,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 13:23:14,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 13:23:14,563 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 13:23:14,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:14,564 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 13:23:14,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:23:14,564 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 13:23:14,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 13:23:14,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:14,566 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:14,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:23:14,567 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:14,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:14,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 13:23:14,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:14,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768952071] [2020-09-25 13:23:14,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:14,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:15,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 13:23:15,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:23:15,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-09-25 13:23:15,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:15,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:15,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:15,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:15,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:23:15,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:23:15,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:15,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:15,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:15,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:15,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:23:15,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:15,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:15,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:15,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:15,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:15,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:15,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:15,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:15,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:15,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:23:15,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-25 13:23:15,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:15,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:15,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:15,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:15,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:15,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:15,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:15,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:15,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:15,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:15,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:23:15,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:15,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:15,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:15,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:15,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:15,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:15,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:15,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:15,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:15,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:15,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:23:15,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:15,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:15,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:15,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:15,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:15,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:23:15,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768952071] [2020-09-25 13:23:15,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:23:15,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:23:15,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486589156] [2020-09-25 13:23:15,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:23:15,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:15,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:23:15,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:23:15,577 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 13:23:15,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:15,695 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 13:23:15,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:23:15,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 13:23:15,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:15,698 INFO L225 Difference]: With dead ends: 58 [2020-09-25 13:23:15,698 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 13:23:15,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:15,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 13:23:15,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 13:23:15,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 13:23:15,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 13:23:15,712 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 13:23:15,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:15,715 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 13:23:15,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:23:15,715 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 13:23:15,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 13:23:15,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:15,719 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:15,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:23:15,720 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:15,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:15,720 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 13:23:15,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:15,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115983150] [2020-09-25 13:23:15,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:15,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:16,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 13:23:16,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:23:16,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-09-25 13:23:16,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:16,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:16,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:16,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 13:23:16,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:16,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:16,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:16,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:16,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:16,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:23:16,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:16,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:16,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:16,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:16,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:16,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:16,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:16,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:16,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:23:16,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:23:16,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-09-25 13:23:16,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:16,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:16,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:16,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:16,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:23:16,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:16,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:16,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:16,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:16,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:16,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:23:16,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:16,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:16,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:16,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:16,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:16,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:16,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:16,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:16,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:16,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:16,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:23:16,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:16,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:16,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:16,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:16,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:16,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:23:16,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115983150] [2020-09-25 13:23:16,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:16,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:23:16,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459890790] [2020-09-25 13:23:16,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:23:16,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:16,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:23:16,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:23:16,937 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 13:23:17,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:17,055 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 13:23:17,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:23:17,056 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 13:23:17,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:17,058 INFO L225 Difference]: With dead ends: 110 [2020-09-25 13:23:17,058 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 13:23:17,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:17,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 13:23:17,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 13:23:17,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 13:23:17,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 13:23:17,071 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 13:23:17,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:17,072 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 13:23:17,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:23:17,072 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 13:23:17,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 13:23:17,075 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:17,075 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:17,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:23:17,076 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:17,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:17,076 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 13:23:17,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:17,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532825805] [2020-09-25 13:23:17,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:17,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:22,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:22,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 13:23:22,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:23:22,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:23:22,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:22,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:22,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:22,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:22,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 13:23:22,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:22,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:22,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:22,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:22,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:22,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:22,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:23:22,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:22,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:22,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:22,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:22,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:22,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:22,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:22,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:22,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:22,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:22,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:23,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:23,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:24,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:25,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:23:25,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:23:25,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3851 [2020-09-25 13:23:25,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:25,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:25,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:25,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:25,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:23:25,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:26,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:26,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:26,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:26,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:26,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 13:23:26,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:26,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:26,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:26,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:26,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:26,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:26,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:26,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:26,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:26,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:26,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:26,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:26,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:26,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:26,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:26,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:26,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:26,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:26,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:26,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:26,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:26,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:26,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:26,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:26,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:26,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:23:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:26,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:26,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:26,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:26,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:23:26,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:26,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:26,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 13:23:26,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532825805] [2020-09-25 13:23:26,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:26,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:23:26,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610842704] [2020-09-25 13:23:26,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:23:26,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:26,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:23:26,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:23:26,145 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 7 states. [2020-09-25 13:23:26,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:26,261 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2020-09-25 13:23:26,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:23:26,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 13:23:26,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:26,264 INFO L225 Difference]: With dead ends: 72 [2020-09-25 13:23:26,264 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 13:23:26,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:26,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 13:23:26,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 13:23:26,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 13:23:26,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 13:23:26,277 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 51 [2020-09-25 13:23:26,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:26,277 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 13:23:26,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:23:26,278 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 13:23:26,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 13:23:26,280 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:26,280 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:26,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:23:26,281 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:26,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:26,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 13:23:26,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:26,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802895042] [2020-09-25 13:23:26,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:26,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:31,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:31,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 13:23:31,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:23:31,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:23:31,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:31,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:31,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:31,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:31,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 13:23:31,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:31,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:31,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:31,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:31,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:31,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:31,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:31,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:31,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:31,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:31,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:31,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:31,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:31,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:31,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:31,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:31,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:31,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:31,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:31,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:33,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:33,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:36,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 13:23:36,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:23:36,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:23:36,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:36,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:36,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:36,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:23:36,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 13:23:36,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:36,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:36,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:36,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:36,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:36,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 13:23:36,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:36,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:36,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:36,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:36,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:23:36,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:36,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:36,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:36,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:36,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:36,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:23:36,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:36,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:36,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:36,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:36,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:36,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:36,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:36,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:23:36,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:36,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:36,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:36,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:36,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:36,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:23:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:36,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:36,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:36,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:36,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 13:23:36,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:36,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:36,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:36,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:36,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:36,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:36,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:36,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:36,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:36,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:36,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:23:36,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:36,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:36,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:36,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:36,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:36,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:36,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:36,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:23:36,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:36,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:36,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:36,645 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 13:23:36,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802895042] [2020-09-25 13:23:36,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:36,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:23:36,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289888224] [2020-09-25 13:23:36,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:23:36,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:36,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:23:36,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:23:36,648 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 10 states. [2020-09-25 13:23:36,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:36,972 INFO L93 Difference]: Finished difference Result 136 states and 191 transitions. [2020-09-25 13:23:36,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:23:36,972 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-25 13:23:36,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:36,974 INFO L225 Difference]: With dead ends: 136 [2020-09-25 13:23:36,974 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 13:23:36,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:23:36,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 13:23:36,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2020-09-25 13:23:36,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 13:23:36,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2020-09-25 13:23:36,988 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 67 [2020-09-25 13:23:36,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:36,989 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2020-09-25 13:23:36,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:23:36,989 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2020-09-25 13:23:36,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 13:23:36,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:36,992 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:36,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:23:36,992 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:36,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:36,992 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 13:23:36,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:36,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298399356] [2020-09-25 13:23:36,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:37,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:37,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:37,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:37,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:37,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:37,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:37,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:38,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:39,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:39,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:42,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:42,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 13:23:42,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:23:42,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:23:42,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:42,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:42,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:42,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:42,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:42,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:42,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:42,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:42,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:42,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:42,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:42,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:42,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:42,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:42,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:42,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:42,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:42,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:42,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:42,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:42,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:42,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:42,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:42,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:44,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:44,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:45,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:47,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:23:47,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:23:47,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:23:47,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:47,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:47,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:47,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:47,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 13:23:47,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:47,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:47,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:47,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:23:47,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:47,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 13:23:47,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:47,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:47,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:23:47,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:47,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:23:47,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:47,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:47,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:47,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:47,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:47,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 13:23:47,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:47,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:47,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:47,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:47,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:47,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:47,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:47,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:47,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:47,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:47,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:23:47,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:47,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:47,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:47,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:47,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:47,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:47,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:23:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:47,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:47,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:23:47,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:47,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:23:47,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:47,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:47,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:47,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:47,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:23:47,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:47,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:47,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:47,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:47,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:47,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:23:47,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:47,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:47,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:47,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:47,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:47,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:47,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:47,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:47,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:47,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:47,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:47,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:47,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:47,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:47,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:47,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:47,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:47,434 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 13:23:47,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298399356] [2020-09-25 13:23:47,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:47,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:23:47,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116303248] [2020-09-25 13:23:47,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:23:47,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:47,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:23:47,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:23:47,437 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand 8 states. [2020-09-25 13:23:47,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:47,599 INFO L93 Difference]: Finished difference Result 128 states and 169 transitions. [2020-09-25 13:23:47,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:23:47,600 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-09-25 13:23:47,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:47,602 INFO L225 Difference]: With dead ends: 128 [2020-09-25 13:23:47,602 INFO L226 Difference]: Without dead ends: 122 [2020-09-25 13:23:47,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:23:47,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-25 13:23:47,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 104. [2020-09-25 13:23:47,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-25 13:23:47,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 138 transitions. [2020-09-25 13:23:47,619 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 138 transitions. Word has length 69 [2020-09-25 13:23:47,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:47,620 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 138 transitions. [2020-09-25 13:23:47,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:23:47,620 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 138 transitions. [2020-09-25 13:23:47,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 13:23:47,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:47,622 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:47,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:23:47,623 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:47,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:47,623 INFO L82 PathProgramCache]: Analyzing trace with hash -659479355, now seen corresponding path program 1 times [2020-09-25 13:23:47,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:47,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936955618] [2020-09-25 13:23:47,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:47,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:48,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:48,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:48,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:48,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:48,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:48,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:48,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:48,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:49,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:49,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:50,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:52,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-25 13:23:52,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 13:23:52,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:23:52,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:52,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:52,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:52,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:52,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 13:23:52,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:52,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:52,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:52,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:52,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:52,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:52,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:52,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:52,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:52,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:52,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:52,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:52,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:52,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:53,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:53,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:53,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:53,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:54,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:54,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:54,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:54,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:57,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 13:23:57,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-25 13:23:57,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:23:57,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:57,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:57,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:23:57,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:23:57,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 13:23:57,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:57,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:57,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:58,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 13:23:58,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:23:58,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-09-25 13:23:58,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:58,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:58,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:58,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:58,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:23:58,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:58,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:58,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:58,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:58,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:58,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 13:23:58,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:58,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:58,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:58,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:58,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:58,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:58,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:58,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:58,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:58,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:58,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:58,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:58,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:58,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:58,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:58,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:58,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:58,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:58,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:58,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:58,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:58,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:58,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:58,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:58,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:58,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:58,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:58,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:23:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:58,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:58,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:58,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:58,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:23:58,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:58,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:58,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:58,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:58,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:58,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:58,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:23:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:58,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:58,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:58,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:58,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 13:23:58,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:58,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:58,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:59,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:59,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:59,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:59,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:59,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:23:59,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:59,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:59,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:59,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:59,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:59,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:59,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:59,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:59,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:59,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:59,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:23:59,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:59,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:59,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:59,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:59,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:59,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-25 13:23:59,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936955618] [2020-09-25 13:23:59,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:59,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:23:59,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191676083] [2020-09-25 13:23:59,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:23:59,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:59,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:23:59,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:23:59,064 INFO L87 Difference]: Start difference. First operand 104 states and 138 transitions. Second operand 11 states. [2020-09-25 13:23:59,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:59,531 INFO L93 Difference]: Finished difference Result 230 states and 371 transitions. [2020-09-25 13:23:59,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:23:59,531 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-09-25 13:23:59,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:59,533 INFO L225 Difference]: With dead ends: 230 [2020-09-25 13:23:59,533 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 13:23:59,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:23:59,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 13:23:59,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 98. [2020-09-25 13:23:59,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 13:23:59,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 128 transitions. [2020-09-25 13:23:59,549 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 128 transitions. Word has length 84 [2020-09-25 13:23:59,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:59,550 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 128 transitions. [2020-09-25 13:23:59,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:23:59,550 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 128 transitions. [2020-09-25 13:23:59,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-25 13:23:59,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:59,552 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:59,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:23:59,552 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:59,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:59,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1801853252, now seen corresponding path program 1 times [2020-09-25 13:23:59,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:59,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103225415] [2020-09-25 13:23:59,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:59,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:04,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 13:24:04,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:24:04,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:24:04,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:04,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:24:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:24:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 13:24:04,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:04,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:04,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:04,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:04,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:04,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:24:04,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:04,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:04,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:04,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:04,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:04,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:04,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:24:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:04,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:05,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:05,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:06,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:06,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:06,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:07,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:07,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking...