/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/Problem19_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:29:30,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:29:30,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:29:30,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:29:30,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:29:30,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:29:30,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:29:30,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:29:30,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:29:30,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:29:30,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:29:30,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:29:30,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:29:30,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:29:30,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:29:30,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:29:30,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:29:30,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:29:30,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:29:30,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:29:30,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:29:30,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:29:30,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:29:30,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:29:30,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:29:30,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:29:30,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:29:30,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:29:30,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:29:30,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:29:30,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:29:30,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:29:30,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:29:30,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:29:30,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:29:30,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:29:30,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:29:30,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:29:30,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:29:30,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:29:30,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:29:30,322 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 04:29:30,345 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:29:30,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:29:30,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:29:30,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:29:30,347 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:29:30,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:29:30,348 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:29:30,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:29:30,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:29:30,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:29:30,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:29:30,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:29:30,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:29:30,349 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:29:30,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:29:30,350 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:29:30,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:29:30,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:29:30,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:29:30,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:29:30,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:29:30,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:29:30,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:29:30,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:29:30,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:29:30,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:29:30,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:29:30,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:29:30,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:29:30,353 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 04:29:30,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:29:30,702 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:29:30,706 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:29:30,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:29:30,708 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:29:30,709 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label18.c [2020-10-14 04:29:30,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/468f136c7/5329fbd9575b43cd8566439f8d9258fc/FLAG847801729 [2020-10-14 04:29:31,950 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:29:31,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label18.c [2020-10-14 04:29:32,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/468f136c7/5329fbd9575b43cd8566439f8d9258fc/FLAG847801729 [2020-10-14 04:29:32,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/468f136c7/5329fbd9575b43cd8566439f8d9258fc [2020-10-14 04:29:32,200 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:29:32,202 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:29:32,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:29:32,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:29:32,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:29:32,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:29:32" (1/1) ... [2020-10-14 04:29:32,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605628e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:32, skipping insertion in model container [2020-10-14 04:29:32,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:29:32" (1/1) ... [2020-10-14 04:29:32,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:29:32,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:29:34,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:29:34,977 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:29:36,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:29:36,124 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:29:36,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:36 WrapperNode [2020-10-14 04:29:36,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:29:36,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:29:36,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:29:36,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:29:36,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:36" (1/1) ... [2020-10-14 04:29:36,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:36" (1/1) ... [2020-10-14 04:29:36,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:36" (1/1) ... [2020-10-14 04:29:36,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:36" (1/1) ... [2020-10-14 04:29:36,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:36" (1/1) ... [2020-10-14 04:29:36,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:36" (1/1) ... [2020-10-14 04:29:36,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:36" (1/1) ... [2020-10-14 04:29:36,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:29:36,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:29:36,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:29:36,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:29:36,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:36" (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 04:29:36,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:29:36,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:29:36,914 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:29:36,914 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:29:36,915 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:29:36,915 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:29:36,915 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:29:36,917 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:29:36,917 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:29:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:29:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:29:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:29:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:29:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:29:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:29:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:29:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:29:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:29:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:29:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:29:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:29:49,791 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:29:49,791 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:29:49,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:29:49 BoogieIcfgContainer [2020-10-14 04:29:49,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:29:49,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:29:49,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:29:49,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:29:49,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:29:32" (1/3) ... [2020-10-14 04:29:49,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357792a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:29:49, skipping insertion in model container [2020-10-14 04:29:49,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:36" (2/3) ... [2020-10-14 04:29:49,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357792a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:29:49, skipping insertion in model container [2020-10-14 04:29:49,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:29:49" (3/3) ... [2020-10-14 04:29:49,835 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label18.c [2020-10-14 04:29:49,845 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:29:49,855 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:29:49,870 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:29:49,906 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:29:49,906 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:29:49,906 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:29:49,907 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:29:49,907 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:29:49,907 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:29:49,907 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:29:49,907 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:29:49,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:29:49,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:29:49,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:29:49,965 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] [2020-10-14 04:29:49,966 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:29:49,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:29:49,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1753504698, now seen corresponding path program 1 times [2020-10-14 04:29:49,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:29:49,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498254357] [2020-10-14 04:29:49,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:29:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:29:50,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:29:50,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:29:50,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 04:29:50,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:29:50,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-14 04:29:50,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:29:50,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:29:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:29:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:29:50,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 04:29:50,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:29:50,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:29:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:29:50,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:29:50,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:29:50,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:29:50,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:29:50,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:29:50,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:29:50,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:29:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:29:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:29:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:29:50,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:29:50,862 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 04:29:50,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498254357] [2020-10-14 04:29:50,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:29:50,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:29:50,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842998799] [2020-10-14 04:29:50,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:29:50,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:29:50,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:29:50,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:29:50,897 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 5 states. [2020-10-14 04:30:31,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:30:31,046 INFO L93 Difference]: Finished difference Result 6572 states and 12481 transitions. [2020-10-14 04:30:31,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:30:31,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-14 04:30:31,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:30:31,106 INFO L225 Difference]: With dead ends: 6572 [2020-10-14 04:30:31,107 INFO L226 Difference]: Without dead ends: 4727 [2020-10-14 04:30:31,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:30:31,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4727 states. [2020-10-14 04:30:31,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4727 to 4640. [2020-10-14 04:30:31,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4640 states. [2020-10-14 04:30:31,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4640 states to 4640 states and 7457 transitions. [2020-10-14 04:30:31,535 INFO L78 Accepts]: Start accepts. Automaton has 4640 states and 7457 transitions. Word has length 36 [2020-10-14 04:30:31,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:30:31,537 INFO L479 AbstractCegarLoop]: Abstraction has 4640 states and 7457 transitions. [2020-10-14 04:30:31,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:30:31,538 INFO L276 IsEmpty]: Start isEmpty. Operand 4640 states and 7457 transitions. [2020-10-14 04:30:31,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 04:30:31,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:30:31,554 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:30:31,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:30:31,555 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:30:31,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:30:31,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1411084081, now seen corresponding path program 1 times [2020-10-14 04:30:31,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:30:31,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796687840] [2020-10-14 04:30:31,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:30:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:30:31,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:32,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:33,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:33,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:30:33,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 04:30:33,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:30:33,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1903 [2020-10-14 04:30:33,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:30:33,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:30:33,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:30:33,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 04:30:33,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 04:30:33,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 04:30:33,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:30:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:30:33,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:33,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:30:33,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:30:33,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:30:33,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:30:33,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:30:33,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:30:33,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:30:33,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:30:33,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:30:33,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:30:33,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:30:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:30:33,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:33,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:30:33,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:30:33,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:30:33,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 04:30:33,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:30:33,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:30:33,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:30:33,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:30:33,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:30:33,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:30:33,891 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:30:33,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796687840] [2020-10-14 04:30:33,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:30:33,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:30:33,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957362703] [2020-10-14 04:30:33,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:30:33,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:30:33,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:30:33,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:30:33,896 INFO L87 Difference]: Start difference. First operand 4640 states and 7457 transitions. Second operand 5 states. [2020-10-14 04:31:13,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:31:13,313 INFO L93 Difference]: Finished difference Result 13523 states and 21991 transitions. [2020-10-14 04:31:13,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:31:13,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-14 04:31:13,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:31:13,362 INFO L225 Difference]: With dead ends: 13523 [2020-10-14 04:31:13,363 INFO L226 Difference]: Without dead ends: 8889 [2020-10-14 04:31:13,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 04:31:13,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8889 states. [2020-10-14 04:31:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8889 to 8880. [2020-10-14 04:31:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8880 states. [2020-10-14 04:31:13,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8880 states to 8880 states and 12351 transitions. [2020-10-14 04:31:13,643 INFO L78 Accepts]: Start accepts. Automaton has 8880 states and 12351 transitions. Word has length 111 [2020-10-14 04:31:13,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:31:13,644 INFO L479 AbstractCegarLoop]: Abstraction has 8880 states and 12351 transitions. [2020-10-14 04:31:13,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:31:13,644 INFO L276 IsEmpty]: Start isEmpty. Operand 8880 states and 12351 transitions. [2020-10-14 04:31:13,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 04:31:13,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:31:13,647 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:31:13,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:31:13,648 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:31:13,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:31:13,649 INFO L82 PathProgramCache]: Analyzing trace with hash -322372748, now seen corresponding path program 1 times [2020-10-14 04:31:13,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:31:13,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107616450] [2020-10-14 04:31:13,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:31:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:31:13,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:31:13,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:31:14,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:31:14,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:31:15,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:31:15,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:31:15,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 04:31:15,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:31:15,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1737 [2020-10-14 04:31:15,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:31:15,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:31:15,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:31:15,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 04:31:15,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 04:31:15,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:31:15,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:31:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:31:15,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:31:15,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:31:15,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:31:15,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:31:15,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:31:15,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:31:15,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:31:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:31:15,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:31:15,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:31:15,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:31:15,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:31:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:31:15,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:31:15,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:31:15,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:31:15,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:31:15,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 04:31:15,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:31:15,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:31:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:31:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:31:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 04:31:15,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:31:15,833 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:31:15,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107616450] [2020-10-14 04:31:15,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:31:15,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:31:15,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604898788] [2020-10-14 04:31:15,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:31:15,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:31:15,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:31:15,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:31:15,837 INFO L87 Difference]: Start difference. First operand 8880 states and 12351 transitions. Second operand 5 states. [2020-10-14 04:31:59,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:31:59,217 INFO L93 Difference]: Finished difference Result 26217 states and 37018 transitions. [2020-10-14 04:31:59,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:31:59,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-14 04:31:59,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:31:59,301 INFO L225 Difference]: With dead ends: 26217 [2020-10-14 04:31:59,302 INFO L226 Difference]: Without dead ends: 17343 [2020-10-14 04:31:59,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:31:59,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17343 states. [2020-10-14 04:31:59,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17343 to 17324. [2020-10-14 04:31:59,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17324 states. [2020-10-14 04:31:59,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17324 states to 17324 states and 22220 transitions. [2020-10-14 04:31:59,894 INFO L78 Accepts]: Start accepts. Automaton has 17324 states and 22220 transitions. Word has length 123 [2020-10-14 04:31:59,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:31:59,895 INFO L479 AbstractCegarLoop]: Abstraction has 17324 states and 22220 transitions. [2020-10-14 04:31:59,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:31:59,895 INFO L276 IsEmpty]: Start isEmpty. Operand 17324 states and 22220 transitions. [2020-10-14 04:31:59,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 04:31:59,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:31:59,910 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:31:59,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:31:59,911 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:31:59,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:31:59,917 INFO L82 PathProgramCache]: Analyzing trace with hash -995758193, now seen corresponding path program 1 times [2020-10-14 04:31:59,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:31:59,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150843701] [2020-10-14 04:31:59,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:31:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:32:00,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:00,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:00,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:01,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:32:01,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 04:32:01,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:32:01,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1757 [2020-10-14 04:32:01,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:32:01,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:32:01,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:32:01,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 04:32:01,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 04:32:01,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:32:01,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:32:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:32:01,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:01,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:32:01,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:32:01,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:32:01,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:32:01,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:32:01,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:32:01,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:32:01,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:32:01,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:32:01,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:32:01,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:32:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:32:01,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:02,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:32:02,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:32:02,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:32:02,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 04:32:02,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:32:02,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:32:02,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:32:02,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:32:02,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 04:32:02,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:32:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:32:02,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150843701] [2020-10-14 04:32:02,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:32:02,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:32:02,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047134546] [2020-10-14 04:32:02,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:32:02,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:32:02,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:32:02,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:32:02,160 INFO L87 Difference]: Start difference. First operand 17324 states and 22220 transitions. Second operand 5 states. [2020-10-14 04:33:11,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:33:11,899 INFO L93 Difference]: Finished difference Result 40331 states and 52897 transitions. [2020-10-14 04:33:11,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:33:11,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-14 04:33:11,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:33:12,000 INFO L225 Difference]: With dead ends: 40331 [2020-10-14 04:33:12,001 INFO L226 Difference]: Without dead ends: 23013 [2020-10-14 04:33:12,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:33:12,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23013 states. [2020-10-14 04:33:12,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23013 to 22968. [2020-10-14 04:33:12,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22968 states. [2020-10-14 04:33:12,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22968 states to 22968 states and 29028 transitions. [2020-10-14 04:33:12,646 INFO L78 Accepts]: Start accepts. Automaton has 22968 states and 29028 transitions. Word has length 137 [2020-10-14 04:33:12,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:33:12,648 INFO L479 AbstractCegarLoop]: Abstraction has 22968 states and 29028 transitions. [2020-10-14 04:33:12,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:33:12,649 INFO L276 IsEmpty]: Start isEmpty. Operand 22968 states and 29028 transitions. [2020-10-14 04:33:12,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 04:33:12,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:33:12,652 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:33:12,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:33:12,653 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:33:12,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:33:12,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1302290577, now seen corresponding path program 1 times [2020-10-14 04:33:12,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:33:12,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016747273] [2020-10-14 04:33:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:33:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:33:12,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:13,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:13,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:13,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:33:13,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 04:33:13,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:33:13,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1269 [2020-10-14 04:33:13,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:33:13,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:33:13,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:33:13,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-14 04:33:13,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 04:33:13,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:33:14,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:33:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:33:14,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:14,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:33:14,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:33:14,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:33:14,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:33:14,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:33:14,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:33:14,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:33:14,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:33:14,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:33:14,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:33:14,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:33:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:33:14,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:14,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:33:14,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 04:33:14,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:33:14,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 04:33:14,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:33:14,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:33:14,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:33:14,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:33:14,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 04:33:14,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:33:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:33:14,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016747273] [2020-10-14 04:33:14,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:33:14,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:33:14,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183898093] [2020-10-14 04:33:14,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:33:14,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:33:14,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:33:14,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:33:14,417 INFO L87 Difference]: Start difference. First operand 22968 states and 29028 transitions. Second operand 5 states.