/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:17:43,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:17:43,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:17:43,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:17:43,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:17:43,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:17:43,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:17:43,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:17:43,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:17:43,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:17:43,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:17:43,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:17:43,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:17:43,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:17:43,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:17:43,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:17:43,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:17:43,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:17:43,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:17:43,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:17:43,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:17:43,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:17:43,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:17:43,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:17:43,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:17:43,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:17:43,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:17:43,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:17:43,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:17:43,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:17:43,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:17:43,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:17:43,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:17:43,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:17:43,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:17:43,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:17:43,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:17:43,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:17:43,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:17:43,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:17:43,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:17:43,567 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:17:43,609 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:17:43,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:17:43,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:17:43,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:17:43,613 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:17:43,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:17:43,613 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:17:43,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:17:43,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:17:43,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:17:43,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:17:43,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:17:43,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:17:43,616 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:17:43,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:17:43,616 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:17:43,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:17:43,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:17:43,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:17:43,617 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:17:43,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:17:43,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:17:43,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:17:43,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:17:43,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:17:43,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:17:43,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:17:43,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:17:43,619 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:17:43,619 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:17:44,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:17:44,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:17:44,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:17:44,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:17:44,125 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:17:44,126 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-25 11:17:44,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce8aeb0c3/f5f6484cbe124af793534c4c0b70481d/FLAG519d8926b [2020-09-25 11:17:44,911 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:17:44,911 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-25 11:17:44,929 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce8aeb0c3/f5f6484cbe124af793534c4c0b70481d/FLAG519d8926b [2020-09-25 11:17:45,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce8aeb0c3/f5f6484cbe124af793534c4c0b70481d [2020-09-25 11:17:45,149 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:17:45,155 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:17:45,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:17:45,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:17:45,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:17:45,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:17:45" (1/1) ... [2020-09-25 11:17:45,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4b387e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:45, skipping insertion in model container [2020-09-25 11:17:45,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:17:45" (1/1) ... [2020-09-25 11:17:45,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:17:45,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:17:45,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:17:45,743 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:17:46,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:17:46,028 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:17:46,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:46 WrapperNode [2020-09-25 11:17:46,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:17:46,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:17:46,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:17:46,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:17:46,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:46" (1/1) ... [2020-09-25 11:17:46,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:46" (1/1) ... [2020-09-25 11:17:46,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:46" (1/1) ... [2020-09-25 11:17:46,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:46" (1/1) ... [2020-09-25 11:17:46,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:46" (1/1) ... [2020-09-25 11:17:46,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:46" (1/1) ... [2020-09-25 11:17:46,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:46" (1/1) ... [2020-09-25 11:17:46,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:17:46,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:17:46,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:17:46,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:17:46,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:17:46,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:17:46,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:17:46,286 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:17:46,286 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:17:46,286 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:17:46,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:17:46,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:17:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:17:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:17:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:17:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:17:47,661 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:17:47,661 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:17:47,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:17:47 BoogieIcfgContainer [2020-09-25 11:17:47,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:17:47,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:17:47,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:17:47,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:17:47,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:17:45" (1/3) ... [2020-09-25 11:17:47,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb69914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:17:47, skipping insertion in model container [2020-09-25 11:17:47,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:46" (2/3) ... [2020-09-25 11:17:47,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb69914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:17:47, skipping insertion in model container [2020-09-25 11:17:47,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:17:47" (3/3) ... [2020-09-25 11:17:47,682 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label55.c [2020-09-25 11:17:47,697 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:17:47,710 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:17:47,734 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:17:47,773 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:17:47,774 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:17:47,774 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:17:47,774 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:17:47,774 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:17:47,774 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:17:47,774 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:17:47,775 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:17:47,808 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:17:47,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 11:17:47,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:47,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:47,831 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:47,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:47,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1120036286, now seen corresponding path program 1 times [2020-09-25 11:17:47,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:47,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060266422] [2020-09-25 11:17:47,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:48,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:48,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:48,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:48,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:50,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:51,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:52,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:52,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:53,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:53,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:53,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 11:17:53,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:17:53,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 11:17:53,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:53,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:53,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:17:53,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:17:53,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 11:17:53,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:17:53,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:53,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:53,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:53,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:53,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:53,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 11:17:53,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:53,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:53,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:53,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:53,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:17:53,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:53,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:53,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060266422] [2020-09-25 11:17:53,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:17:53,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:17:53,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878425852] [2020-09-25 11:17:53,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:17:53,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:53,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:17:53,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:17:53,508 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:17:55,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:55,836 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 11:17:55,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:17:55,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-09-25 11:17:55,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:55,882 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 11:17:55,882 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 11:17:55,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:17:55,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 11:17:56,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 11:17:56,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 11:17:56,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 11:17:56,063 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 131 [2020-09-25 11:17:56,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:56,064 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 11:17:56,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:17:56,064 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 11:17:56,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 11:17:56,071 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:56,072 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1] [2020-09-25 11:17:56,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:17:56,073 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:56,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:56,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1134154151, now seen corresponding path program 1 times [2020-09-25 11:17:56,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:56,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986700803] [2020-09-25 11:17:56,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:56,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:56,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:56,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:56,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:59,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:00,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:01,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:01,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 11:18:01,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:18:01,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 11:18:01,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:01,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:01,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:01,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 11:18:01,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 11:18:01,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:01,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:01,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:01,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:01,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:01,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:01,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:18:01,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:01,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:01,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:01,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:01,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:01,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:01,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:01,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:01,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:01,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:18:01,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:01,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 11:18:01,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:01,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:18:01,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:01,422 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:01,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986700803] [2020-09-25 11:18:01,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:01,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:18:01,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808947566] [2020-09-25 11:18:01,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:18:01,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:01,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:18:01,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:18:01,429 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 5 states. [2020-09-25 11:18:03,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:03,150 INFO L93 Difference]: Finished difference Result 1526 states and 1937 transitions. [2020-09-25 11:18:03,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:18:03,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-25 11:18:03,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:03,164 INFO L225 Difference]: With dead ends: 1526 [2020-09-25 11:18:03,164 INFO L226 Difference]: Without dead ends: 560 [2020-09-25 11:18:03,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:18:03,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-09-25 11:18:03,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 547. [2020-09-25 11:18:03,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-09-25 11:18:03,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 662 transitions. [2020-09-25 11:18:03,215 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 662 transitions. Word has length 165 [2020-09-25 11:18:03,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:03,215 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 662 transitions. [2020-09-25 11:18:03,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:18:03,216 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 662 transitions. [2020-09-25 11:18:03,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 11:18:03,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:03,219 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1] [2020-09-25 11:18:03,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:18:03,220 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:03,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:03,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1449392167, now seen corresponding path program 1 times [2020-09-25 11:18:03,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:03,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482590524] [2020-09-25 11:18:03,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:03,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:03,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:03,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:05,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:05,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:06,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:06,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:07,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:08,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:08,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 11:18:08,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:18:08,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:18:08,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:08,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:08,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:18:08,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:18:08,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 11:18:08,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:09,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:09,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:09,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:09,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:09,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:09,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:18:09,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:09,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:09,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:09,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:09,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:18:09,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:09,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:09,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:09,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:09,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:09,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:18:09,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:09,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 11:18:09,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:09,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:09,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:09,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:09,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:18:09,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:09,627 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:09,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482590524] [2020-09-25 11:18:09,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:09,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 11:18:09,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757630408] [2020-09-25 11:18:09,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 11:18:09,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:09,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 11:18:09,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:18:09,630 INFO L87 Difference]: Start difference. First operand 547 states and 662 transitions. Second operand 16 states. [2020-09-25 11:18:12,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:12,666 INFO L93 Difference]: Finished difference Result 1021 states and 1258 transitions. [2020-09-25 11:18:12,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:18:12,669 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 166 [2020-09-25 11:18:12,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:12,673 INFO L225 Difference]: With dead ends: 1021 [2020-09-25 11:18:12,673 INFO L226 Difference]: Without dead ends: 496 [2020-09-25 11:18:12,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:18:12,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-09-25 11:18:12,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 486. [2020-09-25 11:18:12,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-09-25 11:18:12,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 544 transitions. [2020-09-25 11:18:12,697 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 544 transitions. Word has length 166 [2020-09-25 11:18:12,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:12,700 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 544 transitions. [2020-09-25 11:18:12,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 11:18:12,700 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 544 transitions. [2020-09-25 11:18:12,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 11:18:12,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:12,706 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:12,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:18:12,707 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:12,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:12,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1695780067, now seen corresponding path program 1 times [2020-09-25 11:18:12,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:12,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937248633] [2020-09-25 11:18:12,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:12,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:12,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:13,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:16,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:16,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:17,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:17,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 11:18:17,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:18:17,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 11:18:17,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:17,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:17,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:18:17,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:18:17,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 11:18:17,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:17,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:17,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:17,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:17,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:17,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:17,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 11:18:17,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:17,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:17,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:17,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:17,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:18:17,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:18,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:18,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:18,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:18,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:18,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:18:18,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:18,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 11:18:18,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:18,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:18,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:18:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:18:18,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:18,423 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:18,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937248633] [2020-09-25 11:18:18,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:18,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 11:18:18,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669413092] [2020-09-25 11:18:18,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:18:18,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:18,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:18:18,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:18:18,426 INFO L87 Difference]: Start difference. First operand 486 states and 544 transitions. Second operand 13 states. [2020-09-25 11:18:18,720 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-09-25 11:18:20,158 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-09-25 11:18:24,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:24,236 INFO L93 Difference]: Finished difference Result 2636 states and 3109 transitions. [2020-09-25 11:18:24,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 11:18:24,239 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 169 [2020-09-25 11:18:24,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:24,258 INFO L225 Difference]: With dead ends: 2636 [2020-09-25 11:18:24,260 INFO L226 Difference]: Without dead ends: 1986 [2020-09-25 11:18:24,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=215, Invalid=541, Unknown=0, NotChecked=0, Total=756 [2020-09-25 11:18:24,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2020-09-25 11:18:24,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1465. [2020-09-25 11:18:24,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1465 states. [2020-09-25 11:18:24,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 1635 transitions. [2020-09-25 11:18:24,323 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 1635 transitions. Word has length 169 [2020-09-25 11:18:24,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:24,324 INFO L479 AbstractCegarLoop]: Abstraction has 1465 states and 1635 transitions. [2020-09-25 11:18:24,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 11:18:24,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 1635 transitions. [2020-09-25 11:18:24,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 11:18:24,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:24,330 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:24,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:18:24,331 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:24,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:24,331 INFO L82 PathProgramCache]: Analyzing trace with hash 514828287, now seen corresponding path program 1 times [2020-09-25 11:18:24,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:24,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135876109] [2020-09-25 11:18:24,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:24,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:24,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:24,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:27,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:27,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:27,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:28,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:29,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:29,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 11:18:29,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:18:29,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 11:18:29,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:29,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:29,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:18:29,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 11:18:29,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 11:18:29,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:29,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:29,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:29,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:29,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:29,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:29,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:18:29,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:29,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:29,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:29,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:29,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:29,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:30,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:30,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:30,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:30,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:30,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:30,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:18:30,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:30,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:30,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:18:30,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:30,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:18:30,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:30,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 11:18:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:30,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:30,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:30,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:30,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:18:30,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:30,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 11:18:30,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:30,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:18:30,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:18:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:18:30,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135876109] [2020-09-25 11:18:30,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:30,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:18:30,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461394084] [2020-09-25 11:18:30,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:18:30,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:30,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:18:30,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:18:30,340 INFO L87 Difference]: Start difference. First operand 1465 states and 1635 transitions. Second operand 15 states. [2020-09-25 11:18:32,918 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80