/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:07:44,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:07:44,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:07:44,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:07:44,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:07:44,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:07:44,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:07:44,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:07:44,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:07:44,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:07:44,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:07:44,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:07:44,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:07:44,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:07:44,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:07:44,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:07:44,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:07:44,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:07:44,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:07:44,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:07:44,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:07:44,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:07:44,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:07:44,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:07:44,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:07:44,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:07:44,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:07:44,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:07:44,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:07:44,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:07:44,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:07:44,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:07:44,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:07:44,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:07:44,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:07:44,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:07:44,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:07:44,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:07:44,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:07:44,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:07:44,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:07:44,636 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 04:07:44,702 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:07:44,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:07:44,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:07:44,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:07:44,705 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:07:44,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:07:44,705 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:07:44,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:07:44,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:07:44,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:07:44,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:07:44,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:07:44,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:07:44,707 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:07:44,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:07:44,707 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:07:44,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:07:44,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:07:44,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:07:44,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:07:44,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:07:44,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:07:44,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:07:44,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:07:44,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:07:44,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:07:44,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:07:44,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:07:44,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:07:44,710 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:07:45,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:07:45,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:07:45,114 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:07:45,116 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:07:45,117 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:07:45,118 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label51.c [2020-10-14 04:07:45,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f25b2147d/7e6b61eacbe6414db99d6ff2b0f31f69/FLAGe38191e04 [2020-10-14 04:07:46,075 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:07:46,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label51.c [2020-10-14 04:07:46,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f25b2147d/7e6b61eacbe6414db99d6ff2b0f31f69/FLAGe38191e04 [2020-10-14 04:07:46,630 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f25b2147d/7e6b61eacbe6414db99d6ff2b0f31f69 [2020-10-14 04:07:46,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:07:46,649 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:07:46,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:07:46,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:07:46,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:07:46,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:07:46" (1/1) ... [2020-10-14 04:07:46,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2234316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:46, skipping insertion in model container [2020-10-14 04:07:46,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:07:46" (1/1) ... [2020-10-14 04:07:46,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:07:46,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:07:48,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:07:48,109 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:07:48,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:07:48,567 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:07:48,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:48 WrapperNode [2020-10-14 04:07:48,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:07:48,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:07:48,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:07:48,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:07:48,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:48" (1/1) ... [2020-10-14 04:07:48,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:48" (1/1) ... [2020-10-14 04:07:48,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:48" (1/1) ... [2020-10-14 04:07:48,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:48" (1/1) ... [2020-10-14 04:07:48,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:48" (1/1) ... [2020-10-14 04:07:48,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:48" (1/1) ... [2020-10-14 04:07:48,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:48" (1/1) ... [2020-10-14 04:07:48,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:07:48,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:07:48,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:07:48,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:07:48,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:48" (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 04:07:48,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:07:48,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:07:48,919 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:07:48,920 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:07:48,920 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:07:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:07:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:07:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:07:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:07:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:07:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:07:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:07:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:07:56,233 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:07:56,234 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:07:56,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:07:56 BoogieIcfgContainer [2020-10-14 04:07:56,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:07:56,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:07:56,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:07:56,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:07:56,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:07:46" (1/3) ... [2020-10-14 04:07:56,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1147132c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:07:56, skipping insertion in model container [2020-10-14 04:07:56,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:48" (2/3) ... [2020-10-14 04:07:56,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1147132c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:07:56, skipping insertion in model container [2020-10-14 04:07:56,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:07:56" (3/3) ... [2020-10-14 04:07:56,292 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label51.c [2020-10-14 04:07:56,309 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:07:56,330 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:07:56,358 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:07:56,420 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:07:56,421 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:07:56,421 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:07:56,421 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:07:56,421 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:07:56,422 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:07:56,422 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:07:56,422 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:07:56,486 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 04:07:56,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 04:07:56,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:07:56,506 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] [2020-10-14 04:07:56,507 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:07:56,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:07:56,520 INFO L82 PathProgramCache]: Analyzing trace with hash 480569, now seen corresponding path program 1 times [2020-10-14 04:07:56,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:07:56,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860113678] [2020-10-14 04:07:56,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:07:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:56,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:57,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:57,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 04:07:57,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:57,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 597 [2020-10-14 04:07:57,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:57,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:57,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:07:57,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:07:57,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 04:07:57,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:07:57,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:07:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:57,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:57,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:57,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:07:57,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:57,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 04:07:57,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:57,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:57,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:07:57,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:07:57,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:07:57,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:07:57,734 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 04:07:57,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860113678] [2020-10-14 04:07:57,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:07:57,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:07:57,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680988424] [2020-10-14 04:07:57,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:07:57,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:07:57,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:07:57,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:07:57,772 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 04:08:11,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:08:11,812 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-14 04:08:11,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:08:11,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-14 04:08:11,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:08:11,842 INFO L225 Difference]: With dead ends: 1692 [2020-10-14 04:08:11,842 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 04:08:11,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:08:11,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 04:08:11,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-14 04:08:11,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 04:08:11,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-14 04:08:11,978 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 43 [2020-10-14 04:08:11,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:08:11,978 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-14 04:08:11,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:08:11,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-14 04:08:11,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 04:08:11,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:11,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:08:11,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:08:11,985 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:11,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:11,985 INFO L82 PathProgramCache]: Analyzing trace with hash -452916497, now seen corresponding path program 1 times [2020-10-14 04:08:11,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:11,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496994046] [2020-10-14 04:08:11,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:12,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:12,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:13,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:13,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 04:08:13,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:08:13,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 998 [2020-10-14 04:08:13,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:13,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:08:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:08:13,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:08:13,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:13,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:13,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:13,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:13,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:13,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:08:13,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:13,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:13,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:13,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:13,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:13,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:13,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:08:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:13,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:13,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:13,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:08:13,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:13,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 04:08:13,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:13,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:13,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:13,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:13,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:08:13,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:13,393 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:08:13,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496994046] [2020-10-14 04:08:13,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:08:13,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:08:13,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934997600] [2020-10-14 04:08:13,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:08:13,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:13,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:08:13,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:08:13,404 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 5 states. [2020-10-14 04:08:25,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:08:25,381 INFO L93 Difference]: Finished difference Result 2884 states and 4479 transitions. [2020-10-14 04:08:25,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:08:25,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-14 04:08:25,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:08:25,396 INFO L225 Difference]: With dead ends: 2884 [2020-10-14 04:08:25,397 INFO L226 Difference]: Without dead ends: 1888 [2020-10-14 04:08:25,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:08:25,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2020-10-14 04:08:25,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1884. [2020-10-14 04:08:25,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-14 04:08:25,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2587 transitions. [2020-10-14 04:08:25,488 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2587 transitions. Word has length 114 [2020-10-14 04:08:25,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:08:25,491 INFO L479 AbstractCegarLoop]: Abstraction has 1884 states and 2587 transitions. [2020-10-14 04:08:25,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:08:25,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2587 transitions. [2020-10-14 04:08:25,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 04:08:25,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:25,502 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:08:25,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:08:25,503 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:25,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:25,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1164800257, now seen corresponding path program 1 times [2020-10-14 04:08:25,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:25,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997457282] [2020-10-14 04:08:25,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:25,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:25,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:26,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:26,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 04:08:26,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:08:26,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 756 [2020-10-14 04:08:26,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:26,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:26,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:26,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:08:26,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:08:26,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:26,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:26,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:26,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:26,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:26,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:26,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:08:26,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:26,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:26,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:26,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:26,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:26,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:26,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:08:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:26,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:26,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:26,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:08:26,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:26,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 04:08:26,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:26,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:26,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:26,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:26,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:08:26,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:08:26,689 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:08:26,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997457282] [2020-10-14 04:08:26,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:08:26,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:08:26,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680038086] [2020-10-14 04:08:26,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:08:26,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:26,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:08:26,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:08:26,694 INFO L87 Difference]: Start difference. First operand 1884 states and 2587 transitions. Second operand 5 states. [2020-10-14 04:08:40,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:08:40,583 INFO L93 Difference]: Finished difference Result 4659 states and 6588 transitions. [2020-10-14 04:08:40,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:08:40,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-14 04:08:40,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:08:40,603 INFO L225 Difference]: With dead ends: 4659 [2020-10-14 04:08:40,604 INFO L226 Difference]: Without dead ends: 2781 [2020-10-14 04:08:40,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:08:40,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2020-10-14 04:08:40,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 2775. [2020-10-14 04:08:40,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2775 states. [2020-10-14 04:08:40,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 3665 transitions. [2020-10-14 04:08:40,692 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 3665 transitions. Word has length 117 [2020-10-14 04:08:40,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:08:40,693 INFO L479 AbstractCegarLoop]: Abstraction has 2775 states and 3665 transitions. [2020-10-14 04:08:40,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:08:40,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 3665 transitions. [2020-10-14 04:08:40,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 04:08:40,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:40,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:08:40,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:08:40,696 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:40,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:40,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1618664961, now seen corresponding path program 1 times [2020-10-14 04:08:40,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:40,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975884009] [2020-10-14 04:08:40,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:40,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:41,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:41,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:41,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 04:08:41,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:08:41,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1156 [2020-10-14 04:08:41,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:41,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:41,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:41,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 04:08:41,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:08:41,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-14 04:08:41,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:41,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:41,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:41,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:41,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:41,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:08:41,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:41,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:41,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:41,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:41,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:41,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:42,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:08:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:42,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:42,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:42,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 04:08:42,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:42,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 04:08:42,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:42,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:42,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:42,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:42,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:08:42,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:42,295 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:08:42,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975884009] [2020-10-14 04:08:42,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:08:42,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:08:42,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813503121] [2020-10-14 04:08:42,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:08:42,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:42,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:08:42,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:08:42,300 INFO L87 Difference]: Start difference. First operand 2775 states and 3665 transitions. Second operand 5 states. [2020-10-14 04:08:58,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:08:58,961 INFO L93 Difference]: Finished difference Result 6454 states and 8796 transitions. [2020-10-14 04:08:58,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:08:58,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-14 04:08:58,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:08:58,989 INFO L225 Difference]: With dead ends: 6454 [2020-10-14 04:08:58,990 INFO L226 Difference]: Without dead ends: 3685 [2020-10-14 04:08:58,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:08:59,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2020-10-14 04:08:59,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 3672. [2020-10-14 04:08:59,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3672 states. [2020-10-14 04:08:59,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 4863 transitions. [2020-10-14 04:08:59,126 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 4863 transitions. Word has length 122 [2020-10-14 04:08:59,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:08:59,130 INFO L479 AbstractCegarLoop]: Abstraction has 3672 states and 4863 transitions. [2020-10-14 04:08:59,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:08:59,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 4863 transitions. [2020-10-14 04:08:59,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 04:08:59,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:59,134 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:08:59,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:08:59,135 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:59,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:59,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1062763111, now seen corresponding path program 1 times [2020-10-14 04:08:59,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:59,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587688913] [2020-10-14 04:08:59,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:59,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:59,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:00,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:00,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 04:09:00,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:09:00,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1351 [2020-10-14 04:09:00,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:00,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 04:09:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:09:00,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:00,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:09:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:00,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:00,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:00,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:09:00,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:00,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:09:00,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:00,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:00,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:00,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:00,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:00,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:00,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:09:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:00,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:00,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:00,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 04:09:00,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:00,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 04:09:00,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:00,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:00,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:09:00,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:00,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:09:00,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:00,888 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:09:00,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587688913] [2020-10-14 04:09:00,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:09:00,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:09:00,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434163504] [2020-10-14 04:09:00,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:09:00,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:09:00,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:09:00,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:09:00,899 INFO L87 Difference]: Start difference. First operand 3672 states and 4863 transitions. Second operand 5 states. [2020-10-14 04:09:15,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:09:15,380 INFO L93 Difference]: Finished difference Result 10850 states and 14618 transitions. [2020-10-14 04:09:15,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:09:15,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-14 04:09:15,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:09:15,432 INFO L225 Difference]: With dead ends: 10850 [2020-10-14 04:09:15,432 INFO L226 Difference]: Without dead ends: 7184 [2020-10-14 04:09:15,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:09:15,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7184 states. [2020-10-14 04:09:15,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7184 to 7180. [2020-10-14 04:09:15,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7180 states. [2020-10-14 04:09:15,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7180 states to 7180 states and 9179 transitions. [2020-10-14 04:09:15,648 INFO L78 Accepts]: Start accepts. Automaton has 7180 states and 9179 transitions. Word has length 145 [2020-10-14 04:09:15,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:09:15,649 INFO L479 AbstractCegarLoop]: Abstraction has 7180 states and 9179 transitions. [2020-10-14 04:09:15,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:09:15,649 INFO L276 IsEmpty]: Start isEmpty. Operand 7180 states and 9179 transitions. [2020-10-14 04:09:15,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 04:09:15,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:09:15,657 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, 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] [2020-10-14 04:09:15,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:09:15,657 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:09:15,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:09:15,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1331187119, now seen corresponding path program 1 times [2020-10-14 04:09:15,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:09:15,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378953710] [2020-10-14 04:09:15,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:09:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:15,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:15,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:16,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:17,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:17,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:20,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:20,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 04:09:20,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:09:20,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 04:09:20,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:20,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:09:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:09:20,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:20,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:09:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:20,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:20,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:20,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:09:20,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:20,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:09:20,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:20,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:20,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:20,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:20,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:20,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 46 [2020-10-14 04:09:20,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:09:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:20,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:21,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:21,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:09:21,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:21,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 04:09:21,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:21,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:21,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:09:21,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:21,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:09:21,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:21,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 04:09:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:21,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:21,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:21,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:09:21,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:21,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 04:09:21,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:21,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:21,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:21,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:09:21,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:09:21,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:21,368 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:09:21,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378953710] [2020-10-14 04:09:21,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:09:21,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:09:21,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456116872] [2020-10-14 04:09:21,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:09:21,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:09:21,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:09:21,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:09:21,373 INFO L87 Difference]: Start difference. First operand 7180 states and 9179 transitions. Second operand 8 states. [2020-10-14 04:09:41,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:09:41,024 INFO L93 Difference]: Finished difference Result 17957 states and 23508 transitions. [2020-10-14 04:09:41,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:09:41,026 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 192 [2020-10-14 04:09:41,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:09:41,065 INFO L225 Difference]: With dead ends: 17957 [2020-10-14 04:09:41,065 INFO L226 Difference]: Without dead ends: 8574 [2020-10-14 04:09:41,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:09:41,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8574 states. [2020-10-14 04:09:41,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8574 to 8136. [2020-10-14 04:09:41,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8136 states. [2020-10-14 04:09:41,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8136 states to 8136 states and 9345 transitions. [2020-10-14 04:09:41,279 INFO L78 Accepts]: Start accepts. Automaton has 8136 states and 9345 transitions. Word has length 192 [2020-10-14 04:09:41,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:09:41,280 INFO L479 AbstractCegarLoop]: Abstraction has 8136 states and 9345 transitions. [2020-10-14 04:09:41,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:09:41,280 INFO L276 IsEmpty]: Start isEmpty. Operand 8136 states and 9345 transitions. [2020-10-14 04:09:41,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-14 04:09:41,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:09:41,285 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, 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 04:09:41,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:09:41,285 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:09:41,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:09:41,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1015505567, now seen corresponding path program 1 times [2020-10-14 04:09:41,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:09:41,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854195181] [2020-10-14 04:09:41,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:09:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:41,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:41,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:42,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:43,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:46,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:46,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 04:09:46,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:09:46,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4978 [2020-10-14 04:09:46,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:46,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:46,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:46,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-14 04:09:46,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:09:46,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:09:46,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:09:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:46,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:46,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:46,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:09:46,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:46,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:09:46,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:46,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:46,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:46,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:46,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:46,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:46,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:09:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:46,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:46,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:46,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:09:46,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:46,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 04:09:46,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:46,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:46,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:46,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:09:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:46,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:46,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:46,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:09:46,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:46,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 04:09:46,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:46,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:46,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:09:46,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:46,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:09:46,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:46,706 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 04:09:46,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854195181] [2020-10-14 04:09:46,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:09:46,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:09:46,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892496087] [2020-10-14 04:09:46,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:09:46,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:09:46,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:09:46,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:09:46,712 INFO L87 Difference]: Start difference. First operand 8136 states and 9345 transitions. Second operand 5 states. [2020-10-14 04:10:06,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:10:06,039 INFO L93 Difference]: Finished difference Result 23803 states and 27819 transitions. [2020-10-14 04:10:06,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:10:06,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-14 04:10:06,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:10:06,099 INFO L225 Difference]: With dead ends: 23803 [2020-10-14 04:10:06,099 INFO L226 Difference]: Without dead ends: 15673 [2020-10-14 04:10:06,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 04:10:06,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15673 states. [2020-10-14 04:10:06,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15673 to 14770. [2020-10-14 04:10:06,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14770 states. [2020-10-14 04:10:06,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14770 states to 14770 states and 17319 transitions. [2020-10-14 04:10:06,414 INFO L78 Accepts]: Start accepts. Automaton has 14770 states and 17319 transitions. Word has length 205 [2020-10-14 04:10:06,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:10:06,415 INFO L479 AbstractCegarLoop]: Abstraction has 14770 states and 17319 transitions. [2020-10-14 04:10:06,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:10:06,415 INFO L276 IsEmpty]: Start isEmpty. Operand 14770 states and 17319 transitions. [2020-10-14 04:10:06,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-14 04:10:06,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:10:06,421 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:10:06,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:10:06,422 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:10:06,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:10:06,422 INFO L82 PathProgramCache]: Analyzing trace with hash -340759332, now seen corresponding path program 1 times [2020-10-14 04:10:06,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:10:06,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826199867] [2020-10-14 04:10:06,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:10:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:06,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:06,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:08,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:09,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:11,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:11,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-14 04:10:11,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:10:11,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 04:10:11,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:11,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:11,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:11,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-14 04:10:11,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:10:11,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:11,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:10:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:11,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:11,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:11,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:10:11,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:11,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:10:11,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:11,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:11,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:11,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:11,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:11,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:11,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:10:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:11,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:11,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:11,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:10:11,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:11,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 04:10:11,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:11,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:11,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:11,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:11,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:11,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:11,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:10:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:11,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:11,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:11,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 04:10:11,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:11,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 04:10:11,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:11,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:10:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:10:11,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:11,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-14 04:10:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:11,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:12,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:12,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:10:12,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:12,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 04:10:12,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:12,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:10:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 04:10:12,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 277 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-14 04:10:12,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826199867] [2020-10-14 04:10:12,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:10:12,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:10:12,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366703317] [2020-10-14 04:10:12,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:10:12,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:10:12,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:10:12,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:10:12,239 INFO L87 Difference]: Start difference. First operand 14770 states and 17319 transitions. Second operand 7 states. [2020-10-14 04:10:28,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:10:28,367 INFO L93 Difference]: Finished difference Result 35067 states and 41796 transitions. [2020-10-14 04:10:28,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:10:28,369 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 301 [2020-10-14 04:10:28,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:10:28,439 INFO L225 Difference]: With dead ends: 35067 [2020-10-14 04:10:28,439 INFO L226 Difference]: Without dead ends: 20302 [2020-10-14 04:10:28,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:10:28,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20302 states. [2020-10-14 04:10:28,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20302 to 18529. [2020-10-14 04:10:28,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18529 states. [2020-10-14 04:10:28,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18529 states to 18529 states and 21764 transitions. [2020-10-14 04:10:28,957 INFO L78 Accepts]: Start accepts. Automaton has 18529 states and 21764 transitions. Word has length 301 [2020-10-14 04:10:28,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:10:28,958 INFO L479 AbstractCegarLoop]: Abstraction has 18529 states and 21764 transitions. [2020-10-14 04:10:28,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:10:28,959 INFO L276 IsEmpty]: Start isEmpty. Operand 18529 states and 21764 transitions. [2020-10-14 04:10:28,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-14 04:10:28,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:10:28,972 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:10:28,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:10:28,973 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:10:28,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:10:28,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1448613207, now seen corresponding path program 1 times [2020-10-14 04:10:28,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:10:28,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268618458] [2020-10-14 04:10:28,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:10:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:29,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:29,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:29,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:30,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:32,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:32,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-14 04:10:32,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:10:32,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3334 [2020-10-14 04:10:32,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:32,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:10:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 04:10:32,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:32,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:10:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:32,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:32,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:32,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:10:32,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:32,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:10:32,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:32,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:32,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:32,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:32,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:32,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:32,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:10:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:32,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:32,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:32,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:10:32,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:32,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 04:10:32,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:32,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:32,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:10:32,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:32,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:10:32,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:10:32,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:10:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:32,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:32,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:32,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 04:10:32,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:32,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 04:10:32,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:32,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:32,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:32,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:10:32,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 04:10:32,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:10:33,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 04:10:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:33,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:33,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:33,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:10:33,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:33,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 04:10:33,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:33,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:33,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:33,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:10:33,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:33,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:10:33,433 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 196 proven. 87 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-14 04:10:33,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268618458] [2020-10-14 04:10:33,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:10:33,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:10:33,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902786362] [2020-10-14 04:10:33,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:10:33,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:10:33,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:10:33,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:10:33,436 INFO L87 Difference]: Start difference. First operand 18529 states and 21764 transitions. Second operand 7 states. [2020-10-14 04:10:48,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:10:48,476 INFO L93 Difference]: Finished difference Result 39830 states and 46853 transitions. [2020-10-14 04:10:48,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:10:48,479 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 327 [2020-10-14 04:10:48,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:10:48,550 INFO L225 Difference]: With dead ends: 39830 [2020-10-14 04:10:48,550 INFO L226 Difference]: Without dead ends: 21307 [2020-10-14 04:10:48,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:10:48,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21307 states. [2020-10-14 04:10:48,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21307 to 21275. [2020-10-14 04:10:48,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21275 states. [2020-10-14 04:10:48,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21275 states to 21275 states and 24978 transitions. [2020-10-14 04:10:48,934 INFO L78 Accepts]: Start accepts. Automaton has 21275 states and 24978 transitions. Word has length 327 [2020-10-14 04:10:48,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:10:48,935 INFO L479 AbstractCegarLoop]: Abstraction has 21275 states and 24978 transitions. [2020-10-14 04:10:48,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:10:48,935 INFO L276 IsEmpty]: Start isEmpty. Operand 21275 states and 24978 transitions. [2020-10-14 04:10:48,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-14 04:10:48,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:10:48,944 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:10:48,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:10:48,944 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:10:48,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:10:48,945 INFO L82 PathProgramCache]: Analyzing trace with hash 981953874, now seen corresponding path program 1 times [2020-10-14 04:10:48,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:10:48,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021846414] [2020-10-14 04:10:48,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:10:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:49,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:49,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:49,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:49,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:52,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:53,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:53,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:54,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:54,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-14 04:10:54,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 04:10:54,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 04:10:54,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:54,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:54,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:54,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-14 04:10:54,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 04:10:54,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:10:54,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:10:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:54,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:54,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:54,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:10:54,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:54,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:10:54,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:54,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:54,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:10:54,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:10:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:54,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:54,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:54,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:10:54,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:54,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 04:10:54,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:54,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:54,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:10:54,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:10:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:54,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:54,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:54,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 04:10:54,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 04:10:54,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:54,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:10:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 04:10:54,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:10:54,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-14 04:10:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:54,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:54,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:54,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:10:54,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:54,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 04:10:54,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:54,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:54,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:54,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:10:54,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 04:10:54,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:10:54,649 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 04:10:54,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021846414] [2020-10-14 04:10:54,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:10:54,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:10:54,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777104660] [2020-10-14 04:10:54,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:10:54,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:10:54,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:10:54,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:10:54,653 INFO L87 Difference]: Start difference. First operand 21275 states and 24978 transitions. Second operand 7 states. [2020-10-14 04:11:14,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:11:14,497 INFO L93 Difference]: Finished difference Result 48733 states and 57997 transitions. [2020-10-14 04:11:14,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:11:14,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 350 [2020-10-14 04:11:14,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:11:14,623 INFO L225 Difference]: With dead ends: 48733 [2020-10-14 04:11:14,623 INFO L226 Difference]: Without dead ends: 27463 [2020-10-14 04:11:14,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:11:14,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27463 states. [2020-10-14 04:11:15,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27463 to 25243. [2020-10-14 04:11:15,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25243 states. [2020-10-14 04:11:15,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25243 states to 25243 states and 29502 transitions. [2020-10-14 04:11:15,188 INFO L78 Accepts]: Start accepts. Automaton has 25243 states and 29502 transitions. Word has length 350 [2020-10-14 04:11:15,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:11:15,189 INFO L479 AbstractCegarLoop]: Abstraction has 25243 states and 29502 transitions. [2020-10-14 04:11:15,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:11:15,189 INFO L276 IsEmpty]: Start isEmpty. Operand 25243 states and 29502 transitions. [2020-10-14 04:11:15,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-14 04:11:15,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:11:15,207 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:11:15,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:11:15,208 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:11:15,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:11:15,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1997218383, now seen corresponding path program 1 times [2020-10-14 04:11:15,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:11:15,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214317603] [2020-10-14 04:11:15,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:11:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:15,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:15,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:15,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:17,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:20,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:20,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-14 04:11:20,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:11:20,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 04:11:20,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:20,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:20,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:11:20,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 251 [2020-10-14 04:11:20,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:11:20,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:11:20,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:11:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:20,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:20,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:20,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:11:20,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:20,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:11:20,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:20,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:20,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:11:20,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:20,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:11:20,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:11:20,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:11:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:20,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:20,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:20,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:11:20,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:20,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:11:20,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:20,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:20,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:11:20,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:20,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:11:20,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:11:20,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:11:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:20,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:20,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:20,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 04:11:20,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:20,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 04:11:20,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:20,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:11:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 04:11:20,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:11:20,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 04:11:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:20,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:20,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:20,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:11:20,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:20,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 04:11:20,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:20,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:20,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:11:20,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:11:20,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 04:11:20,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:11:20,948 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 04:11:20,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214317603] [2020-10-14 04:11:20,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:11:20,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:11:20,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027574451] [2020-10-14 04:11:20,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:11:20,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:11:20,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:11:20,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:11:20,951 INFO L87 Difference]: Start difference. First operand 25243 states and 29502 transitions. Second operand 7 states.