/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/Problem13_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:23:02,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:23:02,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:23:02,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:23:02,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:23:02,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:23:02,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:23:02,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:23:02,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:23:02,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:23:02,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:23:02,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:23:02,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:23:02,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:23:02,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:23:02,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:23:02,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:23:02,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:23:02,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:23:02,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:23:02,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:23:02,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:23:02,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:23:02,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:23:02,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:23:02,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:23:02,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:23:02,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:23:02,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:23:02,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:23:02,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:23:02,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:23:02,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:23:02,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:23:02,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:23:02,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:23:02,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:23:02,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:23:02,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:23:02,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:23:02,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:23:02,872 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 21:23:02,913 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:23:02,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:23:02,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:23:02,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:23:02,915 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:23:02,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:23:02,916 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:23:02,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:23:02,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:23:02,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:23:02,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:23:02,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:23:02,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:23:02,918 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:23:02,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:23:02,919 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:23:02,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:23:02,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:23:02,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:23:02,919 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:23:02,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:23:02,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:23:02,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:23:02,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:23:02,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:23:02,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:23:02,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:23:02,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:23:02,922 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:23:02,922 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 21:23:03,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:23:03,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:23:03,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:23:03,276 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:23:03,277 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:23:03,277 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label08.c [2020-10-14 21:23:03,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f63c30d32/93d4b257cd954095bed98a76e8f4fa54/FLAG4d6c38c6a [2020-10-14 21:23:04,185 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:23:04,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label08.c [2020-10-14 21:23:04,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f63c30d32/93d4b257cd954095bed98a76e8f4fa54/FLAG4d6c38c6a [2020-10-14 21:23:04,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f63c30d32/93d4b257cd954095bed98a76e8f4fa54 [2020-10-14 21:23:04,665 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:23:04,666 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:23:04,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:23:04,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:23:04,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:23:04,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:23:04" (1/1) ... [2020-10-14 21:23:04,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68bbd21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:23:04, skipping insertion in model container [2020-10-14 21:23:04,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:23:04" (1/1) ... [2020-10-14 21:23:04,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:23:04,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:23:06,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:23:06,679 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:23:07,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:23:07,483 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:23:07,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:23:07 WrapperNode [2020-10-14 21:23:07,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:23:07,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:23:07,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:23:07,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:23:07,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:23:07" (1/1) ... [2020-10-14 21:23:07,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:23:07" (1/1) ... [2020-10-14 21:23:07,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:23:07" (1/1) ... [2020-10-14 21:23:07,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:23:07" (1/1) ... [2020-10-14 21:23:07,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:23:07" (1/1) ... [2020-10-14 21:23:07,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:23:07" (1/1) ... [2020-10-14 21:23:07,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:23:07" (1/1) ... [2020-10-14 21:23:07,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:23:07,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:23:07,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:23:07,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:23:07,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:23:07" (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 21:23:07,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:23:07,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:23:07,971 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:23:07,971 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:23:07,972 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:23:07,972 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:23:07,972 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:23:07,975 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:23:07,975 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:23:07,975 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:23:07,976 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:23:07,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:23:07,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:23:07,976 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:23:07,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:23:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:23:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:23:20,259 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:23:20,259 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:23:20,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:23:20 BoogieIcfgContainer [2020-10-14 21:23:20,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:23:20,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:23:20,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:23:20,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:23:20,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:23:04" (1/3) ... [2020-10-14 21:23:20,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321920ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:23:20, skipping insertion in model container [2020-10-14 21:23:20,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:23:07" (2/3) ... [2020-10-14 21:23:20,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321920ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:23:20, skipping insertion in model container [2020-10-14 21:23:20,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:23:20" (3/3) ... [2020-10-14 21:23:20,294 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label08.c [2020-10-14 21:23:20,306 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:23:20,321 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:23:20,335 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:23:20,373 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:23:20,374 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:23:20,374 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:23:20,374 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:23:20,374 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:23:20,374 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:23:20,374 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:23:20,375 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:23:20,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:23:20,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 21:23:20,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:23:20,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:23:20,437 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:23:20,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:23:20,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1724184079, now seen corresponding path program 1 times [2020-10-14 21:23:20,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:23:20,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071740419] [2020-10-14 21:23:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:23:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:20,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:21,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:21,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 21:23:21,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:21,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-14 21:23:21,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:21,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:21,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:23:21,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:23:21,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 21:23:21,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:23:21,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:23:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:21,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:21,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:21,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:23:21,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:21,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 21:23:21,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:21,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:21,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:23:21,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:23:21,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:23:21,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:23:21,354 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 21:23:21,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071740419] [2020-10-14 21:23:21,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:23:21,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:23:21,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838805418] [2020-10-14 21:23:21,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:23:21,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:23:21,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:23:21,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:23:21,390 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 21:23:36,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:23:36,669 INFO L93 Difference]: Finished difference Result 3230 states and 5909 transitions. [2020-10-14 21:23:36,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:23:36,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-14 21:23:36,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:23:36,714 INFO L225 Difference]: With dead ends: 3230 [2020-10-14 21:23:36,714 INFO L226 Difference]: Without dead ends: 2026 [2020-10-14 21:23:36,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:23:36,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2020-10-14 21:23:36,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2009. [2020-10-14 21:23:36,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2020-10-14 21:23:36,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3291 transitions. [2020-10-14 21:23:36,957 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3291 transitions. Word has length 56 [2020-10-14 21:23:36,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:23:36,960 INFO L479 AbstractCegarLoop]: Abstraction has 2009 states and 3291 transitions. [2020-10-14 21:23:36,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:23:36,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3291 transitions. [2020-10-14 21:23:36,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 21:23:36,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:23:36,978 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:36,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:23:36,980 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:23:36,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:23:36,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1158943563, now seen corresponding path program 1 times [2020-10-14 21:23:36,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:23:36,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808554269] [2020-10-14 21:23:36,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:23:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:37,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:37,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:38,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:39,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:39,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 21:23:39,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:23:39,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2422 [2020-10-14 21:23:39,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:39,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:39,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:23:39,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:23:39,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:23:39,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 21:23:39,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:23:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:39,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:39,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:23:39,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:39,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 21:23:39,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:39,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:39,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:23:39,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:23:39,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:23:39,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:39,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:23:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:39,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:39,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:39,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:23:39,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:39,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 21:23:39,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:39,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:39,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:23:39,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:23:39,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:23:39,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:40,076 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:23:40,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808554269] [2020-10-14 21:23:40,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:23:40,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:23:40,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414249366] [2020-10-14 21:23:40,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:23:40,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:23:40,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:23:40,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:23:40,083 INFO L87 Difference]: Start difference. First operand 2009 states and 3291 transitions. Second operand 7 states. [2020-10-14 21:24:02,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:24:02,639 INFO L93 Difference]: Finished difference Result 5876 states and 9796 transitions. [2020-10-14 21:24:02,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:24:02,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-10-14 21:24:02,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:24:02,673 INFO L225 Difference]: With dead ends: 5876 [2020-10-14 21:24:02,673 INFO L226 Difference]: Without dead ends: 3873 [2020-10-14 21:24:02,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:24:02,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2020-10-14 21:24:02,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 3754. [2020-10-14 21:24:02,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3754 states. [2020-10-14 21:24:02,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3754 states to 3754 states and 5625 transitions. [2020-10-14 21:24:02,850 INFO L78 Accepts]: Start accepts. Automaton has 3754 states and 5625 transitions. Word has length 131 [2020-10-14 21:24:02,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:24:02,852 INFO L479 AbstractCegarLoop]: Abstraction has 3754 states and 5625 transitions. [2020-10-14 21:24:02,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:24:02,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3754 states and 5625 transitions. [2020-10-14 21:24:02,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 21:24:02,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:24:02,858 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:24:02,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:24:02,859 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:24:02,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:24:02,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1065765487, now seen corresponding path program 1 times [2020-10-14 21:24:02,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:24:02,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744391823] [2020-10-14 21:24:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:24:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:02,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:03,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:04,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:04,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 21:24:04,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:24:04,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1171 [2020-10-14 21:24:04,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:04,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:04,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:24:04,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:24:04,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:24:04,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:04,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:24:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:04,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:04,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:04,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:24:04,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:04,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:24:04,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:04,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:24:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:24:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:04,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:24:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:04,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:04,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:04,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:24:04,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:04,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-14 21:24:04,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:04,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:04,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:24:04,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:24:04,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:24:04,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:04,656 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:24:04,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744391823] [2020-10-14 21:24:04,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:24:04,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:24:04,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152279938] [2020-10-14 21:24:04,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:24:04,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:24:04,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:24:04,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:24:04,663 INFO L87 Difference]: Start difference. First operand 3754 states and 5625 transitions. Second operand 7 states. [2020-10-14 21:24:27,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:24:27,258 INFO L93 Difference]: Finished difference Result 11124 states and 16934 transitions. [2020-10-14 21:24:27,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:24:27,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-10-14 21:24:27,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:24:27,312 INFO L225 Difference]: With dead ends: 11124 [2020-10-14 21:24:27,312 INFO L226 Difference]: Without dead ends: 7376 [2020-10-14 21:24:27,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:24:27,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7376 states. [2020-10-14 21:24:27,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7376 to 7184. [2020-10-14 21:24:27,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7184 states. [2020-10-14 21:24:27,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7184 states to 7184 states and 10084 transitions. [2020-10-14 21:24:27,653 INFO L78 Accepts]: Start accepts. Automaton has 7184 states and 10084 transitions. Word has length 145 [2020-10-14 21:24:27,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:24:27,654 INFO L479 AbstractCegarLoop]: Abstraction has 7184 states and 10084 transitions. [2020-10-14 21:24:27,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:24:27,654 INFO L276 IsEmpty]: Start isEmpty. Operand 7184 states and 10084 transitions. [2020-10-14 21:24:27,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 21:24:27,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:24:27,658 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:24:27,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:24:27,662 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:24:27,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:24:27,663 INFO L82 PathProgramCache]: Analyzing trace with hash 154732923, now seen corresponding path program 1 times [2020-10-14 21:24:27,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:24:27,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264337181] [2020-10-14 21:24:27,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:24:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:27,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:27,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:29,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:29,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 21:24:29,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:24:29,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1636 [2020-10-14 21:24:29,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:29,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:29,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:24:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:24:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:24:29,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:29,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:24:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:29,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:29,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:29,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:24:29,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:29,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:24:29,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:29,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:29,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:24:29,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:29,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:24:29,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:29,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:24:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:29,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:29,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:29,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 21:24:29,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:29,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-14 21:24:29,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:29,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:29,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:24:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:24:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 21:24:29,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:30,228 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:24:30,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264337181] [2020-10-14 21:24:30,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:24:30,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 21:24:30,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166841877] [2020-10-14 21:24:30,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:24:30,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:24:30,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:24:30,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:24:30,231 INFO L87 Difference]: Start difference. First operand 7184 states and 10084 transitions. Second operand 8 states. [2020-10-14 21:24:58,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:24:58,644 INFO L93 Difference]: Finished difference Result 12056 states and 17095 transitions. [2020-10-14 21:24:58,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:24:58,653 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 171 [2020-10-14 21:24:58,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:24:58,675 INFO L225 Difference]: With dead ends: 12056 [2020-10-14 21:24:58,675 INFO L226 Difference]: Without dead ends: 4878 [2020-10-14 21:24:58,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:24:58,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4878 states. [2020-10-14 21:24:58,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4878 to 4698. [2020-10-14 21:24:58,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4698 states. [2020-10-14 21:24:58,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4698 states to 4698 states and 6671 transitions. [2020-10-14 21:24:58,840 INFO L78 Accepts]: Start accepts. Automaton has 4698 states and 6671 transitions. Word has length 171 [2020-10-14 21:24:58,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:24:58,841 INFO L479 AbstractCegarLoop]: Abstraction has 4698 states and 6671 transitions. [2020-10-14 21:24:58,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:24:58,841 INFO L276 IsEmpty]: Start isEmpty. Operand 4698 states and 6671 transitions. [2020-10-14 21:24:58,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 21:24:58,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:24:58,844 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:24:58,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:24:58,845 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:24:58,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:24:58,845 INFO L82 PathProgramCache]: Analyzing trace with hash 797643704, now seen corresponding path program 1 times [2020-10-14 21:24:58,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:24:58,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57212126] [2020-10-14 21:24:58,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:24:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:58,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:59,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:59,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:59,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-14 21:24:59,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:24:59,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 998 [2020-10-14 21:24:59,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:59,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:59,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:24:59,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:24:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-14 21:24:59,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:00,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:25:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:00,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:00,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:00,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:25:00,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:25:00,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:25:00,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:00,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:25:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:25:00,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:00,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:25:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:00,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:00,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:00,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:00,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:25:00,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:25:00,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-14 21:25:00,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:00,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:00,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:00,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:25:00,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:25:00,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 21:25:00,657 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:25:00,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57212126] [2020-10-14 21:25:00,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:25:00,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:25:00,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553847175] [2020-10-14 21:25:00,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:25:00,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:25:00,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:25:00,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:25:00,661 INFO L87 Difference]: Start difference. First operand 4698 states and 6671 transitions. Second operand 5 states. [2020-10-14 21:25:25,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:25:25,192 INFO L93 Difference]: Finished difference Result 11999 states and 18137 transitions. [2020-10-14 21:25:25,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:25:25,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 21:25:25,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:25:25,240 INFO L225 Difference]: With dead ends: 11999 [2020-10-14 21:25:25,240 INFO L226 Difference]: Without dead ends: 8110 [2020-10-14 21:25:25,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:25:25,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8110 states. [2020-10-14 21:25:25,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8110 to 8081. [2020-10-14 21:25:25,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8081 states. [2020-10-14 21:25:25,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8081 states to 8081 states and 10773 transitions. [2020-10-14 21:25:25,467 INFO L78 Accepts]: Start accepts. Automaton has 8081 states and 10773 transitions. Word has length 185 [2020-10-14 21:25:25,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:25:25,468 INFO L479 AbstractCegarLoop]: Abstraction has 8081 states and 10773 transitions. [2020-10-14 21:25:25,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:25:25,468 INFO L276 IsEmpty]: Start isEmpty. Operand 8081 states and 10773 transitions. [2020-10-14 21:25:25,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-14 21:25:25,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:25:25,475 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:25:25,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:25:25,476 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:25:25,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:25:25,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1491676663, now seen corresponding path program 1 times [2020-10-14 21:25:25,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:25:25,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572405995] [2020-10-14 21:25:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:25:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:25,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:25,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:26,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:27,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:27,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-14 21:25:27,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:25:27,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2438 [2020-10-14 21:25:27,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:27,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:27,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:25:27,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:25:27,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-14 21:25:27,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:28,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:25:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:28,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:28,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:28,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:25:28,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:25:28,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:25:28,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:28,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:28,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:25:28,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:25:28,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:28,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:25:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:28,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:28,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:28,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:28,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:25:28,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:25:28,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-14 21:25:28,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:28,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:28,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:25:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:25:28,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:25:28,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 21:25:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:28,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:28,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:28,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:25:28,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:25:28,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-14 21:25:28,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:28,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:25:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:25:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:25:28,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:25:29,187 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:25:29,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572405995] [2020-10-14 21:25:29,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:25:29,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:25:29,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179394704] [2020-10-14 21:25:29,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:25:29,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:25:29,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:25:29,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:25:29,194 INFO L87 Difference]: Start difference. First operand 8081 states and 10773 transitions. Second operand 7 states. [2020-10-14 21:26:02,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:26:02,726 INFO L93 Difference]: Finished difference Result 22480 states and 31739 transitions. [2020-10-14 21:26:02,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:26:02,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-10-14 21:26:02,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:26:02,795 INFO L225 Difference]: With dead ends: 22480 [2020-10-14 21:26:02,795 INFO L226 Difference]: Without dead ends: 15208 [2020-10-14 21:26:02,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:26:02,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15208 states. [2020-10-14 21:26:03,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15208 to 15079. [2020-10-14 21:26:03,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15079 states. [2020-10-14 21:26:03,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15079 states to 15079 states and 19205 transitions. [2020-10-14 21:26:03,252 INFO L78 Accepts]: Start accepts. Automaton has 15079 states and 19205 transitions. Word has length 245 [2020-10-14 21:26:03,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:26:03,253 INFO L479 AbstractCegarLoop]: Abstraction has 15079 states and 19205 transitions. [2020-10-14 21:26:03,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:26:03,253 INFO L276 IsEmpty]: Start isEmpty. Operand 15079 states and 19205 transitions. [2020-10-14 21:26:03,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-14 21:26:03,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:26:03,260 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:26:03,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:26:03,261 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:26:03,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:26:03,262 INFO L82 PathProgramCache]: Analyzing trace with hash -193107163, now seen corresponding path program 1 times [2020-10-14 21:26:03,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:26:03,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543686786] [2020-10-14 21:26:03,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:26:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:03,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:03,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:04,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:04,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:26:04,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:26:04,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1298 [2020-10-14 21:26:04,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:04,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:04,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:26:04,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 21:26:04,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 21:26:04,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:04,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:26:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:04,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:04,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:04,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:26:04,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:04,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:26:04,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:04,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:04,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:26:04,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:04,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:26:04,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:04,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:26:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:05,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:05,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:05,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:26:05,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:05,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 21:26:05,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:05,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:05,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:26:05,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:05,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:26:05,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:05,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 21:26:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:05,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:05,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:05,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 21:26:05,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:05,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-14 21:26:05,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:05,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:05,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:26:05,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:26:05,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:26:05,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:26:05,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543686786] [2020-10-14 21:26:05,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:26:05,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:26:05,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481792617] [2020-10-14 21:26:05,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:26:05,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:26:05,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:26:05,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:26:05,585 INFO L87 Difference]: Start difference. First operand 15079 states and 19205 transitions. Second operand 7 states. [2020-10-14 21:26:40,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:26:40,492 INFO L93 Difference]: Finished difference Result 37044 states and 50053 transitions. [2020-10-14 21:26:40,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:26:40,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-14 21:26:40,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:26:40,586 INFO L225 Difference]: With dead ends: 37044 [2020-10-14 21:26:40,587 INFO L226 Difference]: Without dead ends: 22774 [2020-10-14 21:26:40,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:26:40,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22774 states. [2020-10-14 21:26:41,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22774 to 22482. [2020-10-14 21:26:41,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22482 states. [2020-10-14 21:26:41,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22482 states to 22482 states and 28631 transitions. [2020-10-14 21:26:41,117 INFO L78 Accepts]: Start accepts. Automaton has 22482 states and 28631 transitions. Word has length 263 [2020-10-14 21:26:41,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:26:41,118 INFO L479 AbstractCegarLoop]: Abstraction has 22482 states and 28631 transitions. [2020-10-14 21:26:41,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:26:41,118 INFO L276 IsEmpty]: Start isEmpty. Operand 22482 states and 28631 transitions. [2020-10-14 21:26:41,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-14 21:26:41,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:26:41,124 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:26:41,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:26:41,124 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:26:41,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:26:41,124 INFO L82 PathProgramCache]: Analyzing trace with hash -456803106, now seen corresponding path program 1 times [2020-10-14 21:26:41,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:26:41,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899975610] [2020-10-14 21:26:41,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:26:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:41,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:41,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:41,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:42,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:43,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:43,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-14 21:26:43,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:26:43,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2495 [2020-10-14 21:26:43,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:43,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 21:26:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:26:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 284 [2020-10-14 21:26:43,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:43,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:26:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:43,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:43,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:43,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:26:43,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:43,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:26:43,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:43,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:43,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:26:43,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:43,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:26:43,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:43,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:26:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:44,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:44,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:44,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:44,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:26:44,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:26:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-14 21:26:44,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:44,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:26:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:44,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:26:44,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:44,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:26:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:44,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:44,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:44,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:44,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:26:44,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:26:44,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-14 21:26:44,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:44,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:44,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:26:44,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:44,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:26:44,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:44,764 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 90 proven. 11 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-14 21:26:44,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899975610] [2020-10-14 21:26:44,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:26:44,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:26:44,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012513145] [2020-10-14 21:26:44,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:26:44,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:26:44,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:26:44,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:26:44,766 INFO L87 Difference]: Start difference. First operand 22482 states and 28631 transitions. Second operand 7 states.