/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_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:35:14,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:35:14,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:35:14,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:35:14,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:35:14,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:35:14,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:35:14,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:35:14,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:35:14,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:35:14,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:35:14,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:35:14,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:35:14,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:35:14,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:35:14,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:35:14,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:35:14,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:35:14,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:35:14,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:35:14,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:35:14,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:35:14,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:35:14,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:35:14,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:35:14,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:35:14,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:35:14,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:35:14,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:35:14,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:35:14,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:35:14,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:35:14,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:35:14,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:35:14,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:35:14,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:35:14,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:35:14,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:35:14,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:35:14,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:35:14,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:35:14,637 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 04:35:14,682 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:35:14,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:35:14,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:35:14,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:35:14,686 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:35:14,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:35:14,686 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:35:14,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:35:14,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:35:14,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:35:14,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:35:14,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:35:14,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:35:14,689 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:35:14,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:35:14,689 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:35:14,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:35:14,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:35:14,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:35:14,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:35:14,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:35:14,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:35:14,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:35:14,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:35:14,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:35:14,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:35:14,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:35:14,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:35:14,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:35:14,692 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 04:35:15,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:35:15,019 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:35:15,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:35:15,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:35:15,028 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:35:15,029 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label37.c [2020-10-14 04:35:15,096 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d26ab948a/41293c6efde94b23b183e3e4e2e27430/FLAG756ceb5f1 [2020-10-14 04:35:16,046 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:35:16,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label37.c [2020-10-14 04:35:16,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d26ab948a/41293c6efde94b23b183e3e4e2e27430/FLAG756ceb5f1 [2020-10-14 04:35:16,446 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d26ab948a/41293c6efde94b23b183e3e4e2e27430 [2020-10-14 04:35:16,458 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:35:16,461 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:35:16,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:35:16,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:35:16,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:35:16,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:35:16" (1/1) ... [2020-10-14 04:35:16,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d228d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:16, skipping insertion in model container [2020-10-14 04:35:16,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:35:16" (1/1) ... [2020-10-14 04:35:16,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:35:16,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:35:19,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:35:19,317 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:35:20,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:35:20,410 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:35:20,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:20 WrapperNode [2020-10-14 04:35:20,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:35:20,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:35:20,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:35:20,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:35:20,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:20" (1/1) ... [2020-10-14 04:35:20,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:20" (1/1) ... [2020-10-14 04:35:20,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:20" (1/1) ... [2020-10-14 04:35:20,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:20" (1/1) ... [2020-10-14 04:35:20,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:20" (1/1) ... [2020-10-14 04:35:20,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:20" (1/1) ... [2020-10-14 04:35:20,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:20" (1/1) ... [2020-10-14 04:35:21,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:35:21,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:35:21,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:35:21,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:35:21,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:20" (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 04:35:21,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:35:21,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:35:21,115 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:35:21,115 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:35:21,116 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:35:21,116 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:35:21,116 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:35:21,116 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:35:21,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:35:21,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:35:21,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:35:21,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:35:21,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:35:21,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:35:21,118 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:35:21,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:35:21,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:35:21,118 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:35:21,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:35:21,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:35:21,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:35:33,857 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:35:33,857 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:35:33,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:35:33 BoogieIcfgContainer [2020-10-14 04:35:33,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:35:33,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:35:33,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:35:33,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:35:33,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:35:16" (1/3) ... [2020-10-14 04:35:33,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c68a1a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:35:33, skipping insertion in model container [2020-10-14 04:35:33,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:20" (2/3) ... [2020-10-14 04:35:33,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c68a1a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:35:33, skipping insertion in model container [2020-10-14 04:35:33,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:35:33" (3/3) ... [2020-10-14 04:35:33,886 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label37.c [2020-10-14 04:35:33,898 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:35:33,908 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:35:33,924 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:35:33,961 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:35:33,962 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:35:33,962 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:35:33,962 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:35:33,962 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:35:33,962 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:35:33,962 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:35:33,963 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:35:34,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:35:34,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 04:35:34,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:35:34,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:35:34,025 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:35:34,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:35:34,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1414077658, now seen corresponding path program 1 times [2020-10-14 04:35:34,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:35:34,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408414880] [2020-10-14 04:35:34,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:35:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:35:34,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:34,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:35:34,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 04:35:34,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:35:34,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-10-14 04:35:34,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:35:34,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:35:34,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:35:34,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:35:34,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 04:35:34,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:35:34,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:35:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:35:34,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:34,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:35:34,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:35:34,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:35:34,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 04:35:34,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:35:34,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:35:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:35:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:35:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:35:34,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:35:34,958 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 04:35:34,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408414880] [2020-10-14 04:35:34,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:35:34,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:35:34,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431847510] [2020-10-14 04:35:34,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:35:34,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:35:34,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:35:34,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:35:34,990 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 04:36:01,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:36:01,826 INFO L93 Difference]: Finished difference Result 5031 states and 9453 transitions. [2020-10-14 04:36:01,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:36:01,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-14 04:36:01,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:36:01,873 INFO L225 Difference]: With dead ends: 5031 [2020-10-14 04:36:01,873 INFO L226 Difference]: Without dead ends: 3190 [2020-10-14 04:36:01,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:36:01,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2020-10-14 04:36:02,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3184. [2020-10-14 04:36:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3184 states. [2020-10-14 04:36:02,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4965 transitions. [2020-10-14 04:36:02,116 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4965 transitions. Word has length 44 [2020-10-14 04:36:02,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:36:02,119 INFO L479 AbstractCegarLoop]: Abstraction has 3184 states and 4965 transitions. [2020-10-14 04:36:02,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:36:02,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4965 transitions. [2020-10-14 04:36:02,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 04:36:02,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:36:02,130 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:02,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:36:02,131 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:36:02,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:36:02,132 INFO L82 PathProgramCache]: Analyzing trace with hash 563830556, now seen corresponding path program 1 times [2020-10-14 04:36:02,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:36:02,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158589691] [2020-10-14 04:36:02,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:36:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:02,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:02,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:03,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:03,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:04,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:04,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:04,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:04,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 04:36:04,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:36:04,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2587 [2020-10-14 04:36:04,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:04,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:04,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:36:04,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:36:04,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:36:04,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:36:04,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:36:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:04,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:04,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:04,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:36:04,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:36:04,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:36:04,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:04,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:04,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:36:04,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:36:04,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:36:04,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 04:36:04,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:36:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:04,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:05,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:05,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:36:05,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:36:05,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 04:36:05,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:05,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:05,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:36:05,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 04:36:05,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:36:05,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:36:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:36:05,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158589691] [2020-10-14 04:36:05,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:36:05,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:36:05,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880695806] [2020-10-14 04:36:05,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:36:05,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:36:05,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:36:05,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:36:05,126 INFO L87 Difference]: Start difference. First operand 3184 states and 4965 transitions. Second operand 5 states. [2020-10-14 04:36:43,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:36:43,425 INFO L93 Difference]: Finished difference Result 9218 states and 14512 transitions. [2020-10-14 04:36:43,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:36:43,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-14 04:36:43,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:36:43,466 INFO L225 Difference]: With dead ends: 9218 [2020-10-14 04:36:43,467 INFO L226 Difference]: Without dead ends: 6040 [2020-10-14 04:36:43,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:36:43,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6040 states. [2020-10-14 04:36:43,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6040 to 6024. [2020-10-14 04:36:43,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6024 states. [2020-10-14 04:36:43,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 8357 transitions. [2020-10-14 04:36:43,671 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 8357 transitions. Word has length 117 [2020-10-14 04:36:43,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:36:43,672 INFO L479 AbstractCegarLoop]: Abstraction has 6024 states and 8357 transitions. [2020-10-14 04:36:43,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:36:43,672 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 8357 transitions. [2020-10-14 04:36:43,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 04:36:43,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:36:43,676 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:43,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:36:43,676 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:36:43,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:36:43,677 INFO L82 PathProgramCache]: Analyzing trace with hash -333562722, now seen corresponding path program 1 times [2020-10-14 04:36:43,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:36:43,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364549884] [2020-10-14 04:36:43,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:36:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:43,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:43,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:44,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:44,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:45,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:45,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 04:36:45,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:36:45,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2201 [2020-10-14 04:36:45,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:45,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:45,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:36:45,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:36:45,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 04:36:45,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:36:46,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:36:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:46,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:46,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:46,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:36:46,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:36:46,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:36:46,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:46,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:46,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:36:46,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:36:46,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:36:46,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:36:46,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:36:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:46,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:46,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:46,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:36:46,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:36:46,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 04:36:46,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:46,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:46,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:36:46,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:36:46,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:36:46,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:36:46,337 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:36:46,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364549884] [2020-10-14 04:36:46,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:36:46,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:36:46,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422306827] [2020-10-14 04:36:46,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:36:46,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:36:46,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:36:46,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:36:46,343 INFO L87 Difference]: Start difference. First operand 6024 states and 8357 transitions. Second operand 6 states. [2020-10-14 04:37:51,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:37:51,465 INFO L93 Difference]: Finished difference Result 23455 states and 33230 transitions. [2020-10-14 04:37:51,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:37:51,468 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-10-14 04:37:51,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:37:51,536 INFO L225 Difference]: With dead ends: 23455 [2020-10-14 04:37:51,536 INFO L226 Difference]: Without dead ends: 17437 [2020-10-14 04:37:51,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:37:51,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17437 states. [2020-10-14 04:37:51,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17437 to 17336. [2020-10-14 04:37:51,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17336 states. [2020-10-14 04:37:52,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17336 states to 17336 states and 23109 transitions. [2020-10-14 04:37:52,006 INFO L78 Accepts]: Start accepts. Automaton has 17336 states and 23109 transitions. Word has length 117 [2020-10-14 04:37:52,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:37:52,008 INFO L479 AbstractCegarLoop]: Abstraction has 17336 states and 23109 transitions. [2020-10-14 04:37:52,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:37:52,008 INFO L276 IsEmpty]: Start isEmpty. Operand 17336 states and 23109 transitions. [2020-10-14 04:37:52,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-14 04:37:52,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:37:52,020 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:37:52,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:37:52,020 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:37:52,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:37:52,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1925520631, now seen corresponding path program 1 times [2020-10-14 04:37:52,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:37:52,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723005942] [2020-10-14 04:37:52,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:37:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:37:52,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:52,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:53,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:53,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:56,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:37:56,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 04:37:56,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:37:56,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4512 [2020-10-14 04:37:56,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:37:56,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:37:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:37:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 04:37:56,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:37:56,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:37:56,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:37:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:37:56,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:56,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:37:56,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:37:56,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:37:56,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:37:56,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:37:56,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:37:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:37:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:37:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:37:56,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:37:56,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:37:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:37:56,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:56,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:37:56,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:37:56,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:37:56,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 04:37:56,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:37:56,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:37:56,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:37:56,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:37:56,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 04:37:56,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:37:56,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 04:37:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:37:56,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:56,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:37:56,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:37:56,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:37:56,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 04:37:56,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:37:56,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:37:56,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:37:56,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:37:56,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 04:37:56,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:37:57,191 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:37:57,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723005942] [2020-10-14 04:37:57,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:37:57,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:37:57,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650164397] [2020-10-14 04:37:57,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:37:57,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:37:57,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:37:57,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:37:57,196 INFO L87 Difference]: Start difference. First operand 17336 states and 23109 transitions. Second operand 7 states. [2020-10-14 04:39:06,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:39:06,239 INFO L93 Difference]: Finished difference Result 43597 states and 61061 transitions. [2020-10-14 04:39:06,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:39:06,243 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2020-10-14 04:39:06,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:39:06,337 INFO L225 Difference]: With dead ends: 43597 [2020-10-14 04:39:06,337 INFO L226 Difference]: Without dead ends: 26267 [2020-10-14 04:39:06,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:39:06,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26267 states. [2020-10-14 04:39:07,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26267 to 26157. [2020-10-14 04:39:07,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26157 states. [2020-10-14 04:39:07,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26157 states to 26157 states and 33904 transitions. [2020-10-14 04:39:07,067 INFO L78 Accepts]: Start accepts. Automaton has 26157 states and 33904 transitions. Word has length 189 [2020-10-14 04:39:07,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:39:07,069 INFO L479 AbstractCegarLoop]: Abstraction has 26157 states and 33904 transitions. [2020-10-14 04:39:07,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:39:07,069 INFO L276 IsEmpty]: Start isEmpty. Operand 26157 states and 33904 transitions. [2020-10-14 04:39:07,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-14 04:39:07,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:39:07,074 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:39:07,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:39:07,075 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:39:07,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:39:07,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1718044880, now seen corresponding path program 1 times [2020-10-14 04:39:07,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:39:07,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067080938] [2020-10-14 04:39:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:39:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:07,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:07,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:07,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:09,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:12,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:12,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-14 04:39:12,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:39:12,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 04:39:12,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:12,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:39:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 04:39:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 04:39:12,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:39:12,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:39:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:12,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:12,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:12,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:39:12,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:39:12,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:39:12,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:12,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:12,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:39:12,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:39:12,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:39:12,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:39:12,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:39:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:12,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:12,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:12,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:39:12,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:39:12,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 04:39:12,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:12,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:12,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:39:12,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:39:12,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:39:12,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:39:12,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 04:39:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:12,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:12,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:12,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:39:12,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:39:12,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 04:39:12,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:12,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:39:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:39:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 04:39:12,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:39:12,637 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 04:39:12,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067080938] [2020-10-14 04:39:12,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:39:12,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:39:12,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271655950] [2020-10-14 04:39:12,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:39:12,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:39:12,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:39:12,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:39:12,649 INFO L87 Difference]: Start difference. First operand 26157 states and 33904 transitions. Second operand 7 states.