/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 SequenceOfStatements --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 --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:27:57,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:27:57,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:27:57,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:27:57,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:27:57,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:27:57,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:27:57,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:27:57,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:27:57,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:27:57,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:27:57,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:27:57,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:27:57,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:27:57,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:27:57,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:27:57,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:27:57,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:27:57,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:27:57,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:27:57,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:27:57,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:27:57,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:27:57,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:27:57,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:27:57,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:27:57,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:27:57,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:27:57,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:27:57,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:27:57,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:27:57,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:27:57,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:27:57,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:27:57,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:27:57,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:27:57,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:27:57,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:27:57,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:27:57,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:27:57,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:27:57,608 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 [2020-10-14 22:27:57,632 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:27:57,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:27:57,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:27:57,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:27:57,634 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:27:57,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:27:57,635 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:27:57,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:27:57,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:27:57,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:27:57,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:27:57,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:27:57,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:27:57,636 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:27:57,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:27:57,636 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:27:57,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:27:57,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:27:57,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:27:57,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:27:57,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:27:57,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:27:57,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:27:57,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:27:57,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:27:57,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:27:57,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:27:57,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:27:57,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:27:57,639 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 -> SequenceOfStatements 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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=true; [2020-10-14 22:27:57,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:27:57,966 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:27:57,970 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:27:57,972 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:27:57,972 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:27:57,973 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label21.c [2020-10-14 22:27:58,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75147d93d/d1882f885f6a4d3ca69a8f5e2ddb905b/FLAG276a7c0a4 [2020-10-14 22:27:58,785 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:27:58,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label21.c [2020-10-14 22:27:58,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75147d93d/d1882f885f6a4d3ca69a8f5e2ddb905b/FLAG276a7c0a4 [2020-10-14 22:27:58,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75147d93d/d1882f885f6a4d3ca69a8f5e2ddb905b [2020-10-14 22:27:58,872 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:27:58,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:27:58,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:27:58,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:27:58,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:27:58,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:27:58" (1/1) ... [2020-10-14 22:27:58,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532b1c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:58, skipping insertion in model container [2020-10-14 22:27:58,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:27:58" (1/1) ... [2020-10-14 22:27:58,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:27:59,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:28:00,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:28:00,181 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:28:00,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:28:00,642 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:28:00,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:28:00 WrapperNode [2020-10-14 22:28:00,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:28:00,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:28:00,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:28:00,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:28:00,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:28:00" (1/1) ... [2020-10-14 22:28:00,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:28:00" (1/1) ... [2020-10-14 22:28:00,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:28:00" (1/1) ... [2020-10-14 22:28:00,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:28:00" (1/1) ... [2020-10-14 22:28:00,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:28:00" (1/1) ... [2020-10-14 22:28:00,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:28:00" (1/1) ... [2020-10-14 22:28:00,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:28:00" (1/1) ... [2020-10-14 22:28:00,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:28:00,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:28:00,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:28:00,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:28:00,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:28:00" (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 [2020-10-14 22:28:00,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:28:00,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:28:00,953 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:28:00,953 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:28:00,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:28:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:28:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:28:00,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:28:00,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:28:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:28:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:28:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:28:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:28:10,204 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:28:10,205 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:28:10,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:28:10 BoogieIcfgContainer [2020-10-14 22:28:10,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:28:10,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:28:10,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:28:10,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:28:10,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:27:58" (1/3) ... [2020-10-14 22:28:10,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e93b22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:28:10, skipping insertion in model container [2020-10-14 22:28:10,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:28:00" (2/3) ... [2020-10-14 22:28:10,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e93b22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:28:10, skipping insertion in model container [2020-10-14 22:28:10,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:28:10" (3/3) ... [2020-10-14 22:28:10,235 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label21.c [2020-10-14 22:28:10,251 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:28:10,264 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:28:10,287 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:28:10,332 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:28:10,332 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:28:10,332 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:28:10,333 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:28:10,333 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:28:10,333 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:28:10,333 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:28:10,333 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:28:10,378 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:28:10,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 22:28:10,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:10,395 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] [2020-10-14 22:28:10,396 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:10,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:10,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1940897135, now seen corresponding path program 1 times [2020-10-14 22:28:10,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:10,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496695506] [2020-10-14 22:28:10,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:10,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:11,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:11,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 22:28:11,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:11,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-14 22:28:11,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:11,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:11,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:28:11,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:28:11,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 22:28:11,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:28:11,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:11,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:11,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:11,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:11,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:11,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:28:11,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:11,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:11,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:11,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:11,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:28:11,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:11,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:28:11,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496695506] [2020-10-14 22:28:11,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:28:11,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:28:11,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721521052] [2020-10-14 22:28:11,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:28:11,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:11,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:28:11,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:28:11,337 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:28:21,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:21,578 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-14 22:28:21,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:28:21,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-14 22:28:21,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:21,607 INFO L225 Difference]: With dead ends: 1692 [2020-10-14 22:28:21,607 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 22:28:21,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:28:21,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 22:28:21,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-14 22:28:21,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 22:28:21,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-14 22:28:21,748 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 65 [2020-10-14 22:28:21,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:21,751 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-14 22:28:21,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:28:21,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-14 22:28:21,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 22:28:21,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:21,767 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:28:21,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:28:21,768 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:21,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:21,769 INFO L82 PathProgramCache]: Analyzing trace with hash 821258535, now seen corresponding path program 1 times [2020-10-14 22:28:21,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:21,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930951918] [2020-10-14 22:28:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:21,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:22,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:22,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:24,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:24,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:24,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 22:28:24,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:28:24,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2571 [2020-10-14 22:28:24,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:24,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:24,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:28:24,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:28:24,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 22:28:24,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:28:24,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:24,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:24,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:24,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:24,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:24,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:28:24,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:24,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:24,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:24,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:28:24,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:24,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:24,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:24,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:24,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:24,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:28:24,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:28:24,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-14 22:28:24,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:24,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:28:24,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:28:24,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930951918] [2020-10-14 22:28:24,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:24,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:28:24,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684258771] [2020-10-14 22:28:25,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:28:25,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:25,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:28:25,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:28:25,004 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 6 states. [2020-10-14 22:28:40,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:40,767 INFO L93 Difference]: Finished difference Result 2459 states and 3671 transitions. [2020-10-14 22:28:40,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 22:28:40,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-10-14 22:28:40,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:40,778 INFO L225 Difference]: With dead ends: 2459 [2020-10-14 22:28:40,779 INFO L226 Difference]: Without dead ends: 1463 [2020-10-14 22:28:40,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:28:40,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2020-10-14 22:28:40,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1463. [2020-10-14 22:28:40,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1463 states. [2020-10-14 22:28:40,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2035 transitions. [2020-10-14 22:28:40,853 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2035 transitions. Word has length 136 [2020-10-14 22:28:40,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:40,857 INFO L479 AbstractCegarLoop]: Abstraction has 1463 states and 2035 transitions. [2020-10-14 22:28:40,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:28:40,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2035 transitions. [2020-10-14 22:28:40,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 22:28:40,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:40,862 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, 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, 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] [2020-10-14 22:28:40,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:28:40,862 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:40,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:40,863 INFO L82 PathProgramCache]: Analyzing trace with hash -340123911, now seen corresponding path program 1 times [2020-10-14 22:28:40,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:40,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189707409] [2020-10-14 22:28:40,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:41,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:41,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:41,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:45,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:45,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 22:28:45,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:28:45,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4065 [2020-10-14 22:28:45,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:45,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:45,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:28:45,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:28:45,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 22:28:45,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:45,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:45,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:45,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:45,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:45,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:45,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:28:45,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:45,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:45,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:45,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:45,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:28:45,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:45,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:45,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:45,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:45,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:28:45,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:45,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 22:28:45,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:45,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:45,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:28:45,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:45,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:28:45,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:45,869 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 30 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:28:45,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189707409] [2020-10-14 22:28:45,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:45,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:28:45,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759743231] [2020-10-14 22:28:45,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:28:45,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:45,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:28:45,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:28:45,872 INFO L87 Difference]: Start difference. First operand 1463 states and 2035 transitions. Second operand 8 states. [2020-10-14 22:29:04,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:29:04,511 INFO L93 Difference]: Finished difference Result 2540 states and 3675 transitions. [2020-10-14 22:29:04,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:29:04,518 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 139 [2020-10-14 22:29:04,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:29:04,527 INFO L225 Difference]: With dead ends: 2540 [2020-10-14 22:29:04,528 INFO L226 Difference]: Without dead ends: 1473 [2020-10-14 22:29:04,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:29:04,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2020-10-14 22:29:04,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1463. [2020-10-14 22:29:04,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1463 states. [2020-10-14 22:29:04,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2013 transitions. [2020-10-14 22:29:04,584 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2013 transitions. Word has length 139 [2020-10-14 22:29:04,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:29:04,585 INFO L479 AbstractCegarLoop]: Abstraction has 1463 states and 2013 transitions. [2020-10-14 22:29:04,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:29:04,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2013 transitions. [2020-10-14 22:29:04,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 22:29:04,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:04,587 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, 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, 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] [2020-10-14 22:29:04,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:29:04,588 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:04,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:04,588 INFO L82 PathProgramCache]: Analyzing trace with hash -69070137, now seen corresponding path program 1 times [2020-10-14 22:29:04,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:04,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646139318] [2020-10-14 22:29:04,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:04,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:04,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:04,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 22:29:04,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:04,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-14 22:29:04,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:04,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:29:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:29:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 22:29:04,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:05,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:29:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:05,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:05,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:05,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:29:05,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:05,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:29:05,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:05,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:05,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:29:05,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:05,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:29:05,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:05,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:29:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:05,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:05,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:05,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:29:05,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:05,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 22:29:05,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:05,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:29:05,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:29:05,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646139318] [2020-10-14 22:29:05,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:29:05,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:29:05,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843544323] [2020-10-14 22:29:05,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:29:05,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:29:05,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:29:05,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:29:05,322 INFO L87 Difference]: Start difference. First operand 1463 states and 2013 transitions. Second operand 5 states. [2020-10-14 22:29:19,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:29:19,387 INFO L93 Difference]: Finished difference Result 3386 states and 5008 transitions. [2020-10-14 22:29:19,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:29:19,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-14 22:29:19,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:29:19,404 INFO L225 Difference]: With dead ends: 3386 [2020-10-14 22:29:19,404 INFO L226 Difference]: Without dead ends: 2362 [2020-10-14 22:29:19,408 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 [2020-10-14 22:29:19,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2020-10-14 22:29:19,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2359. [2020-10-14 22:29:19,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2359 states. [2020-10-14 22:29:19,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 3200 transitions. [2020-10-14 22:29:19,479 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 3200 transitions. Word has length 152 [2020-10-14 22:29:19,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:29:19,480 INFO L479 AbstractCegarLoop]: Abstraction has 2359 states and 3200 transitions. [2020-10-14 22:29:19,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:29:19,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 3200 transitions. [2020-10-14 22:29:19,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-14 22:29:19,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:19,484 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:29:19,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:29:19,485 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:19,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:19,485 INFO L82 PathProgramCache]: Analyzing trace with hash -2097561551, now seen corresponding path program 1 times [2020-10-14 22:29:19,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:19,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607371033] [2020-10-14 22:29:19,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:19,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:19,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:20,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:21,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:23,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:23,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 22:29:23,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:29:23,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4226 [2020-10-14 22:29:23,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:23,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:29:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:29:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-14 22:29:23,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:29:23,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:29:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:23,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:23,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:23,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:29:23,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:23,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:29:23,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:23,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:23,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:29:23,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:29:23,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:29:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:23,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:24,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:24,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:29:24,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:24,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 22:29:24,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:24,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:24,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:29:24,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:24,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:29:24,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:24,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:29:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:24,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:24,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:24,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:29:24,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:24,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 22:29:24,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:24,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:24,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:29:24,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:24,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:29:24,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 6 proven. 112 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 22:29:24,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607371033] [2020-10-14 22:29:24,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:29:24,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:29:24,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320528822] [2020-10-14 22:29:24,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:29:24,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:29:24,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:29:24,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:29:24,467 INFO L87 Difference]: Start difference. First operand 2359 states and 3200 transitions. Second operand 8 states. [2020-10-14 22:29:52,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:29:52,173 INFO L93 Difference]: Finished difference Result 7917 states and 11472 transitions. [2020-10-14 22:29:52,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:29:52,175 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2020-10-14 22:29:52,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:29:52,212 INFO L225 Difference]: With dead ends: 7917 [2020-10-14 22:29:52,213 INFO L226 Difference]: Without dead ends: 5997 [2020-10-14 22:29:52,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:29:52,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5997 states. [2020-10-14 22:29:52,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5997 to 5971. [2020-10-14 22:29:52,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5971 states. [2020-10-14 22:29:52,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5971 states to 5971 states and 8054 transitions. [2020-10-14 22:29:52,412 INFO L78 Accepts]: Start accepts. Automaton has 5971 states and 8054 transitions. Word has length 223 [2020-10-14 22:29:52,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:29:52,412 INFO L479 AbstractCegarLoop]: Abstraction has 5971 states and 8054 transitions. [2020-10-14 22:29:52,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:29:52,413 INFO L276 IsEmpty]: Start isEmpty. Operand 5971 states and 8054 transitions. [2020-10-14 22:29:52,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 22:29:52,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:52,417 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:29:52,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:29:52,418 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:52,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:52,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1570353042, now seen corresponding path program 1 times [2020-10-14 22:29:52,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:52,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76151456] [2020-10-14 22:29:52,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:52,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:52,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:52,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:57,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:57,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 22:29:57,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:29:57,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 22:29:57,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:57,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:57,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:29:57,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:29:57,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 22:29:57,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:57,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:29:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:57,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:57,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:57,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:29:57,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:57,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:29:57,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:57,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:29:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:29:57,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:57,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:29:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:57,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:57,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:57,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:29:57,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:57,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 22:29:57,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:57,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:57,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:57,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:57,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:29:57,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:57,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:29:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:57,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:57,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:58,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:58,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:29:58,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:29:58,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-14 22:29:58,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:58,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:58,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:58,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:29:58,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 22:29:58,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76151456] [2020-10-14 22:29:58,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:29:58,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:29:58,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530969792] [2020-10-14 22:29:58,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:29:58,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:29:58,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:29:58,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:29:58,324 INFO L87 Difference]: Start difference. First operand 5971 states and 8054 transitions. Second operand 5 states. [2020-10-14 22:30:14,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:14,291 INFO L93 Difference]: Finished difference Result 13274 states and 18644 transitions. [2020-10-14 22:30:14,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:30:14,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2020-10-14 22:30:14,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:14,335 INFO L225 Difference]: With dead ends: 13274 [2020-10-14 22:30:14,335 INFO L226 Difference]: Without dead ends: 7742 [2020-10-14 22:30:14,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:30:14,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7742 states. [2020-10-14 22:30:14,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7742 to 7305. [2020-10-14 22:30:14,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7305 states. [2020-10-14 22:30:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7305 states to 7305 states and 10407 transitions. [2020-10-14 22:30:14,575 INFO L78 Accepts]: Start accepts. Automaton has 7305 states and 10407 transitions. Word has length 238 [2020-10-14 22:30:14,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:14,578 INFO L479 AbstractCegarLoop]: Abstraction has 7305 states and 10407 transitions. [2020-10-14 22:30:14,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:30:14,578 INFO L276 IsEmpty]: Start isEmpty. Operand 7305 states and 10407 transitions. [2020-10-14 22:30:14,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-14 22:30:14,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:14,587 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:30:14,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:30:14,587 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:14,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:14,587 INFO L82 PathProgramCache]: Analyzing trace with hash 868181971, now seen corresponding path program 1 times [2020-10-14 22:30:14,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:14,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366617347] [2020-10-14 22:30:14,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:14,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:14,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:15,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:15,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:18,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:19,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:19,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-14 22:30:19,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:30:19,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 22:30:19,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:19,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:19,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:19,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-14 22:30:19,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 22:30:19,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:19,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:19,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:19,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:19,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:19,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:19,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:30:19,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:19,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:19,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:19,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:19,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:19,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:19,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:19,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:20,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:20,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:30:20,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:20,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 22:30:20,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:20,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:20,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:20,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:20,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:20,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:30:20,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:30:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:20,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:20,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:20,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:30:20,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:20,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 22:30:20,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:20,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:20,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:20,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-14 22:30:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:20,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:20,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:20,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 22:30:20,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:20,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 22:30:20,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:20,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:20,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:20,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:20,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:30:20,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:20,387 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 177 proven. 3 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-14 22:30:20,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366617347] [2020-10-14 22:30:20,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:20,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:30:20,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784645875] [2020-10-14 22:30:20,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:30:20,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:20,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:30:20,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:30:20,391 INFO L87 Difference]: Start difference. First operand 7305 states and 10407 transitions. Second operand 5 states. [2020-10-14 22:30:49,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:49,178 INFO L93 Difference]: Finished difference Result 20371 states and 30385 transitions. [2020-10-14 22:30:49,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:30:49,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 300 [2020-10-14 22:30:49,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:49,246 INFO L225 Difference]: With dead ends: 20371 [2020-10-14 22:30:49,246 INFO L226 Difference]: Without dead ends: 13505 [2020-10-14 22:30:49,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:30:49,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13505 states. [2020-10-14 22:30:49,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13505 to 12184. [2020-10-14 22:30:49,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12184 states. [2020-10-14 22:30:49,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12184 states to 12184 states and 16854 transitions. [2020-10-14 22:30:49,618 INFO L78 Accepts]: Start accepts. Automaton has 12184 states and 16854 transitions. Word has length 300 [2020-10-14 22:30:49,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:49,618 INFO L479 AbstractCegarLoop]: Abstraction has 12184 states and 16854 transitions. [2020-10-14 22:30:49,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:30:49,619 INFO L276 IsEmpty]: Start isEmpty. Operand 12184 states and 16854 transitions. [2020-10-14 22:30:49,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-14 22:30:49,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:49,632 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:30:49,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:30:49,633 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:49,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:49,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1002941618, now seen corresponding path program 1 times [2020-10-14 22:30:49,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:49,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309220957] [2020-10-14 22:30:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:49,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:49,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:50,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:53,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:54,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:54,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-14 22:30:54,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:30:54,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 22:30:54,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:54,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:54,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:30:54,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:30:54,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-14 22:30:54,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:54,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:54,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:54,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:54,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:54,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:54,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:30:54,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:54,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:54,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:54,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:54,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:30:54,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:54,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:55,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:55,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:55,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:30:55,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:55,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 22:30:55,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:55,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:55,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:30:55,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:55,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:30:55,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:55,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:30:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:55,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:55,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:55,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:30:55,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:55,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 22:30:55,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:55,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:55,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:55,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:55,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:30:55,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:55,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:30:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:55,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:55,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:55,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:30:55,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:55,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 22:30:55,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:55,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:55,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:55,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:55,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:30:55,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:55,829 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 176 proven. 12 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-14 22:30:55,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309220957] [2020-10-14 22:30:55,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:55,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:30:55,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906903027] [2020-10-14 22:30:55,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:30:55,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:55,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:30:55,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:30:55,833 INFO L87 Difference]: Start difference. First operand 12184 states and 16854 transitions. Second operand 9 states. [2020-10-14 22:30:55,996 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-10-14 22:31:29,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:31:29,422 INFO L93 Difference]: Finished difference Result 30294 states and 43194 transitions. [2020-10-14 22:31:29,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 22:31:29,425 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 313 [2020-10-14 22:31:29,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:31:29,501 INFO L225 Difference]: With dead ends: 30294 [2020-10-14 22:31:29,501 INFO L226 Difference]: Without dead ends: 18549 [2020-10-14 22:31:29,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-10-14 22:31:29,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18549 states. [2020-10-14 22:31:29,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18549 to 17604. [2020-10-14 22:31:29,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17604 states. [2020-10-14 22:31:29,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17604 states to 17604 states and 23278 transitions. [2020-10-14 22:31:29,982 INFO L78 Accepts]: Start accepts. Automaton has 17604 states and 23278 transitions. Word has length 313 [2020-10-14 22:31:29,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:31:29,983 INFO L479 AbstractCegarLoop]: Abstraction has 17604 states and 23278 transitions. [2020-10-14 22:31:29,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:31:29,984 INFO L276 IsEmpty]: Start isEmpty. Operand 17604 states and 23278 transitions. [2020-10-14 22:31:29,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-14 22:31:29,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:31:29,995 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:31:29,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:31:29,996 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:31:29,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:31:29,996 INFO L82 PathProgramCache]: Analyzing trace with hash -501614805, now seen corresponding path program 1 times [2020-10-14 22:31:29,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:31:29,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638253384] [2020-10-14 22:31:29,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:31:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:30,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:30,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:30,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:32,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:33,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:34,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:34,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-14 22:31:34,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:31:34,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4779 [2020-10-14 22:31:34,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:34,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:34,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:31:34,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-10-14 22:31:34,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 22:31:34,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:34,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:31:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:34,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:34,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:34,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:31:34,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:34,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:31:34,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:34,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:31:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:31:34,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:35,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:31:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:35,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:35,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:35,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:31:35,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:35,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 22:31:35,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:35,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:35,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:31:35,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:35,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:31:35,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:35,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:31:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:35,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:35,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:35,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 22:31:35,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:35,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 22:31:35,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:35,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:35,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:31:35,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:35,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 22:31:35,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:35,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-14 22:31:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:35,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:35,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:35,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:31:35,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:35,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 22:31:35,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:35,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:31:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:31:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:31:35,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:35,447 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 262 proven. 59 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-14 22:31:35,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638253384] [2020-10-14 22:31:35,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:31:35,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:31:35,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716526219] [2020-10-14 22:31:35,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:31:35,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:31:35,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:31:35,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:31:35,450 INFO L87 Difference]: Start difference. First operand 17604 states and 23278 transitions. Second operand 6 states. [2020-10-14 22:31:52,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:31:52,646 INFO L93 Difference]: Finished difference Result 38324 states and 51951 transitions. [2020-10-14 22:31:52,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:31:52,651 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 329 [2020-10-14 22:31:52,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:31:52,737 INFO L225 Difference]: With dead ends: 38324 [2020-10-14 22:31:52,737 INFO L226 Difference]: Without dead ends: 21168 [2020-10-14 22:31:52,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:31:52,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21168 states. [2020-10-14 22:31:53,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21168 to 21158. [2020-10-14 22:31:53,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21158 states. [2020-10-14 22:31:53,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21158 states to 21158 states and 27651 transitions. [2020-10-14 22:31:53,229 INFO L78 Accepts]: Start accepts. Automaton has 21158 states and 27651 transitions. Word has length 329 [2020-10-14 22:31:53,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:31:53,230 INFO L479 AbstractCegarLoop]: Abstraction has 21158 states and 27651 transitions. [2020-10-14 22:31:53,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:31:53,230 INFO L276 IsEmpty]: Start isEmpty. Operand 21158 states and 27651 transitions. [2020-10-14 22:31:53,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-14 22:31:53,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:31:53,241 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:31:53,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:31:53,241 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:31:53,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:31:53,242 INFO L82 PathProgramCache]: Analyzing trace with hash 500047936, now seen corresponding path program 1 times [2020-10-14 22:31:53,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:31:53,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221009442] [2020-10-14 22:31:53,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:31:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:53,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:53,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking...