/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:02:31,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:02:31,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:02:31,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:02:31,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:02:31,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:02:31,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:02:31,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:02:31,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:02:31,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:02:31,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:02:31,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:02:31,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:02:31,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:02:31,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:02:31,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:02:31,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:02:31,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:02:31,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:02:31,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:02:31,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:02:31,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:02:31,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:02:31,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:02:31,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:02:31,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:02:31,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:02:31,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:02:31,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:02:31,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:02:31,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:02:31,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:02:31,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:02:31,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:02:31,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:02:31,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:02:31,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:02:31,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:02:31,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:02:31,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:02:31,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:02:31,678 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 23:02:31,721 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:02:31,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:02:31,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:02:31,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:02:31,723 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:02:31,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:02:31,724 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:02:31,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:02:31,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:02:31,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:02:31,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:02:31,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:02:31,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:02:31,725 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:02:31,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:02:31,731 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:02:31,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:02:31,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:02:31,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:02:31,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:02:31,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:02:31,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:02:31,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:02:31,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:02:31,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:02:31,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:02:31,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:02:31,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:02:31,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:02:31,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:02:32,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:02:32,116 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:02:32,120 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:02:32,122 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:02:32,123 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:02:32,123 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label27.c [2020-10-14 23:02:32,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/713f1f812/1a7581b942ce4793996b935c5d5ea6c5/FLAGda9d96543 [2020-10-14 23:02:33,319 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:02:33,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label27.c [2020-10-14 23:02:33,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/713f1f812/1a7581b942ce4793996b935c5d5ea6c5/FLAGda9d96543 [2020-10-14 23:02:33,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/713f1f812/1a7581b942ce4793996b935c5d5ea6c5 [2020-10-14 23:02:33,555 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:02:33,558 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:02:33,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:02:33,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:02:33,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:02:33,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:02:33" (1/1) ... [2020-10-14 23:02:33,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2362c63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:33, skipping insertion in model container [2020-10-14 23:02:33,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:02:33" (1/1) ... [2020-10-14 23:02:33,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:02:33,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:02:36,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:02:36,187 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:02:37,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:02:37,258 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:02:37,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:37 WrapperNode [2020-10-14 23:02:37,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:02:37,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:02:37,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:02:37,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:02:37,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:37" (1/1) ... [2020-10-14 23:02:37,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:37" (1/1) ... [2020-10-14 23:02:37,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:37" (1/1) ... [2020-10-14 23:02:37,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:37" (1/1) ... [2020-10-14 23:02:37,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:37" (1/1) ... [2020-10-14 23:02:37,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:37" (1/1) ... [2020-10-14 23:02:37,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:37" (1/1) ... [2020-10-14 23:02:37,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:02:37,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:02:37,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:02:37,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:02:37,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:37" (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 23:02:37,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:02:37,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:02:37,912 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 23:02:37,912 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 23:02:37,912 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 23:02:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 23:02:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 23:02:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 23:02:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:02:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 23:02:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 23:02:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 23:02:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 23:02:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 23:02:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 23:02:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:02:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:02:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:02:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:02:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:02:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:02:51,051 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:02:51,051 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:02:51,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:02:51 BoogieIcfgContainer [2020-10-14 23:02:51,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:02:51,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:02:51,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:02:51,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:02:51,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:02:33" (1/3) ... [2020-10-14 23:02:51,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c31bc2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:02:51, skipping insertion in model container [2020-10-14 23:02:51,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:02:37" (2/3) ... [2020-10-14 23:02:51,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c31bc2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:02:51, skipping insertion in model container [2020-10-14 23:02:51,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:02:51" (3/3) ... [2020-10-14 23:02:51,081 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label27.c [2020-10-14 23:02:51,093 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:02:51,109 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:02:51,125 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:02:51,162 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:02:51,162 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:02:51,162 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:02:51,163 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:02:51,163 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:02:51,163 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:02:51,163 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:02:51,163 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:02:51,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 23:02:51,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:02:51,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:02:51,220 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] [2020-10-14 23:02:51,220 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:02:51,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:02:51,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1728106772, now seen corresponding path program 1 times [2020-10-14 23:02:51,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:02:51,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403131933] [2020-10-14 23:02:51,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:02:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:02:51,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:51,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:02:51,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:02:51,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:02:51,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 553 [2020-10-14 23:02:51,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:02:51,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:02:51,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:02:51,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:02:51,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:02:51,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:02:52,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:02:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:02:52,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:52,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:02:52,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:02:52,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:02:52,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:02:52,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:02:52,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:02:52,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:02:52,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:02:52,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:02:52,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:02:52,098 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 23:02:52,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403131933] [2020-10-14 23:02:52,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:02:52,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:02:52,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236121290] [2020-10-14 23:02:52,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:02:52,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:02:52,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:02:52,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:02:52,128 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 23:03:14,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:03:14,917 INFO L93 Difference]: Finished difference Result 5031 states and 9453 transitions. [2020-10-14 23:03:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:03:14,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-14 23:03:14,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:03:14,961 INFO L225 Difference]: With dead ends: 5031 [2020-10-14 23:03:14,961 INFO L226 Difference]: Without dead ends: 3190 [2020-10-14 23:03:14,975 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 23:03:15,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2020-10-14 23:03:15,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3184. [2020-10-14 23:03:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3184 states. [2020-10-14 23:03:15,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4965 transitions. [2020-10-14 23:03:15,191 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4965 transitions. Word has length 33 [2020-10-14 23:03:15,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:03:15,193 INFO L479 AbstractCegarLoop]: Abstraction has 3184 states and 4965 transitions. [2020-10-14 23:03:15,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:03:15,194 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4965 transitions. [2020-10-14 23:03:15,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 23:03:15,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:03:15,203 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:15,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:03:15,204 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:03:15,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:03:15,205 INFO L82 PathProgramCache]: Analyzing trace with hash -885940917, now seen corresponding path program 1 times [2020-10-14 23:03:15,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:03:15,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850530094] [2020-10-14 23:03:15,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:03:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:15,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:15,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:15,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:16,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:17,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:17,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:18,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:18,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 23:03:18,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:03:18,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2733 [2020-10-14 23:03:18,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:18,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:18,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:03:18,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:03:18,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 23:03:18,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:03:18,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:03:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:18,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:18,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:18,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:03:18,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:03:18,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:03:18,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:18,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:03:18,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:03:18,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:03:18,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 23:03:18,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:03:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:18,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:18,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:18,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:18,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:18,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:03:18,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:03:18,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-14 23:03:18,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:18,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:18,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:03:18,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:03:18,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 23:03:18,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:03:18,693 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:03:18,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850530094] [2020-10-14 23:03:18,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:03:18,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 23:03:18,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122197020] [2020-10-14 23:03:18,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:03:18,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:03:18,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:03:18,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:03:18,699 INFO L87 Difference]: Start difference. First operand 3184 states and 4965 transitions. Second operand 6 states. [2020-10-14 23:04:00,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:04:00,566 INFO L93 Difference]: Finished difference Result 9372 states and 14737 transitions. [2020-10-14 23:04:00,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:04:00,570 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-14 23:04:00,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:04:00,608 INFO L225 Difference]: With dead ends: 9372 [2020-10-14 23:04:00,609 INFO L226 Difference]: Without dead ends: 6194 [2020-10-14 23:04:00,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:04:00,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6194 states. [2020-10-14 23:04:00,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6194 to 6143. [2020-10-14 23:04:00,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6143 states. [2020-10-14 23:04:00,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6143 states to 6143 states and 8514 transitions. [2020-10-14 23:04:00,825 INFO L78 Accepts]: Start accepts. Automaton has 6143 states and 8514 transitions. Word has length 106 [2020-10-14 23:04:00,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:04:00,826 INFO L479 AbstractCegarLoop]: Abstraction has 6143 states and 8514 transitions. [2020-10-14 23:04:00,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:04:00,826 INFO L276 IsEmpty]: Start isEmpty. Operand 6143 states and 8514 transitions. [2020-10-14 23:04:00,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 23:04:00,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:04:00,830 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:04:00,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:04:00,830 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:04:00,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:04:00,831 INFO L82 PathProgramCache]: Analyzing trace with hash -611181303, now seen corresponding path program 1 times [2020-10-14 23:04:00,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:04:00,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168180087] [2020-10-14 23:04:00,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:04:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:04:00,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:01,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:01,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:01,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:01,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:04:02,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 23:04:02,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:04:02,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1113 [2020-10-14 23:04:02,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:04:02,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:04:02,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:04:02,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:04:02,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 23:04:02,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:04:02,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:04:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:04:02,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:02,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:04:02,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:04:02,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:04:02,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:04:02,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:04:02,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:04:02,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:04:02,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:04:02,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:04:02,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:04:02,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:04:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:04:02,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:02,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:02,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:04:02,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:04:02,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:04:02,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 23:04:02,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:04:02,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:04:02,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:04:02,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:04:02,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 23:04:02,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:04:02,435 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:04:02,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168180087] [2020-10-14 23:04:02,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:04:02,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:04:02,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937003615] [2020-10-14 23:04:02,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:04:02,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:04:02,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:04:02,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:04:02,438 INFO L87 Difference]: Start difference. First operand 6143 states and 8514 transitions. Second operand 7 states. [2020-10-14 23:05:24,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:05:24,171 INFO L93 Difference]: Finished difference Result 29461 states and 42344 transitions. [2020-10-14 23:05:24,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:05:24,185 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-14 23:05:24,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:05:24,363 INFO L225 Difference]: With dead ends: 29461 [2020-10-14 23:05:24,363 INFO L226 Difference]: Without dead ends: 23324 [2020-10-14 23:05:24,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:05:24,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23324 states. [2020-10-14 23:05:25,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23324 to 23166. [2020-10-14 23:05:25,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23166 states. [2020-10-14 23:05:25,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23166 states to 23166 states and 31059 transitions. [2020-10-14 23:05:25,219 INFO L78 Accepts]: Start accepts. Automaton has 23166 states and 31059 transitions. Word has length 106 [2020-10-14 23:05:25,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:05:25,224 INFO L479 AbstractCegarLoop]: Abstraction has 23166 states and 31059 transitions. [2020-10-14 23:05:25,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:05:25,224 INFO L276 IsEmpty]: Start isEmpty. Operand 23166 states and 31059 transitions. [2020-10-14 23:05:25,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 23:05:25,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:05:25,239 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:05:25,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:05:25,244 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:05:25,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:05:25,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1975417091, now seen corresponding path program 1 times [2020-10-14 23:05:25,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:05:25,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972380354] [2020-10-14 23:05:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:05:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:25,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:25,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:26,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:27,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:30,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:30,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-14 23:05:30,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:05:30,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 23:05:30,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:30,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:30,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:05:30,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:05:30,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 23:05:30,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:05:30,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:05:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:30,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:30,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:30,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:05:30,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:05:30,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:05:30,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:30,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:05:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:05:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:05:30,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:05:30,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:05:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:30,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:30,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:30,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:30,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:05:30,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:05:30,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-14 23:05:30,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:30,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:30,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:05:30,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:05:30,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 23:05:30,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:05:31,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 23:05:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:31,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:31,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:31,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 23:05:31,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:05:31,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 23:05:31,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:31,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:31,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:05:31,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:05:31,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 23:05:31,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:05:31,446 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 23:05:31,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972380354] [2020-10-14 23:05:31,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:05:31,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:05:31,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690094382] [2020-10-14 23:05:31,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:05:31,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:05:31,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:05:31,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:05:31,458 INFO L87 Difference]: Start difference. First operand 23166 states and 31059 transitions. Second operand 9 states.