/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:46:17,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:46:17,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:46:17,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:46:17,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:46:17,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:46:17,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:46:17,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:46:17,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:46:17,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:46:17,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:46:17,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:46:17,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:46:17,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:46:17,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:46:17,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:46:17,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:46:17,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:46:17,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:46:17,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:46:17,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:46:17,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:46:17,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:46:17,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:46:17,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:46:17,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:46:17,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:46:17,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:46:17,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:46:17,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:46:17,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:46:17,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:46:17,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:46:17,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:46:17,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:46:17,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:46:17,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:46:17,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:46:17,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:46:17,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:46:17,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:46:17,822 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 [2020-09-25 06:46:17,848 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:46:17,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:46:17,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:46:17,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:46:17,850 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:46:17,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:46:17,851 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:46:17,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:46:17,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:46:17,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:46:17,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:46:17,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:46:17,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:46:17,852 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:46:17,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:46:17,852 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:46:17,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:46:17,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:46:17,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:46:17,853 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:46:17,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:46:17,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:46:17,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:46:17,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:46:17,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:46:17,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:46:17,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:46:17,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:46:17,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:46:17,855 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:46:18,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:46:18,335 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:46:18,339 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:46:18,341 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:46:18,342 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:46:18,343 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label56.c [2020-09-25 06:46:18,440 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82e10e50b/126b711bb17641bb8cf3eecd7ed1c23d/FLAG63b62884d [2020-09-25 06:46:19,129 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:46:19,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label56.c [2020-09-25 06:46:19,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82e10e50b/126b711bb17641bb8cf3eecd7ed1c23d/FLAG63b62884d [2020-09-25 06:46:19,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82e10e50b/126b711bb17641bb8cf3eecd7ed1c23d [2020-09-25 06:46:19,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:46:19,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:46:19,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:19,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:46:19,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:46:19,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:19" (1/1) ... [2020-09-25 06:46:19,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd1f025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:19, skipping insertion in model container [2020-09-25 06:46:19,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:19" (1/1) ... [2020-09-25 06:46:19,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:46:19,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:46:19,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:19,933 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:46:20,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:20,230 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:46:20,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:20 WrapperNode [2020-09-25 06:46:20,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:20,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:46:20,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:46:20,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:46:20,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:20" (1/1) ... [2020-09-25 06:46:20,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:20" (1/1) ... [2020-09-25 06:46:20,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:20" (1/1) ... [2020-09-25 06:46:20,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:20" (1/1) ... [2020-09-25 06:46:20,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:20" (1/1) ... [2020-09-25 06:46:20,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:20" (1/1) ... [2020-09-25 06:46:20,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:20" (1/1) ... [2020-09-25 06:46:20,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:46:20,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:46:20,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:46:20,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:46:20,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:46:20,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:46:20,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:46:20,453 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:46:20,453 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:46:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:46:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:46:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:46:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:46:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:46:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:46:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:46:21,851 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:46:21,852 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:46:21,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:21 BoogieIcfgContainer [2020-09-25 06:46:21,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:46:21,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:46:21,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:46:21,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:46:21,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:46:19" (1/3) ... [2020-09-25 06:46:21,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c991d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:21, skipping insertion in model container [2020-09-25 06:46:21,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:20" (2/3) ... [2020-09-25 06:46:21,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c991d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:21, skipping insertion in model container [2020-09-25 06:46:21,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:21" (3/3) ... [2020-09-25 06:46:21,874 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label56.c [2020-09-25 06:46:21,886 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:46:21,898 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:46:21,919 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:46:21,953 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:46:21,953 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:46:21,953 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:46:21,954 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:46:21,954 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:46:21,954 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:46:21,954 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:46:21,954 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:46:21,989 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:46:22,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 06:46:22,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:22,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:22,016 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:22,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:22,025 INFO L82 PathProgramCache]: Analyzing trace with hash -934155158, now seen corresponding path program 1 times [2020-09-25 06:46:22,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:22,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389212717] [2020-09-25 06:46:22,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:22,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:22,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:23,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:23,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:25,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:26,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:27,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:27,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:27,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 06:46:27,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:46:27,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 06:46:27,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:27,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:46:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:46:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 06:46:27,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:46:27,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:27,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:27,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:27,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:27,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:27,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 06:46:27,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:27,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:27,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:27,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:27,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:46:27,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:46:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:27,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389212717] [2020-09-25 06:46:27,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:46:27,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:46:27,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136231338] [2020-09-25 06:46:27,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:46:27,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:27,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:46:27,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:46:27,796 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 06:46:30,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:30,137 INFO L93 Difference]: Finished difference Result 1247 states and 1695 transitions. [2020-09-25 06:46:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:46:30,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-09-25 06:46:30,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:30,166 INFO L225 Difference]: With dead ends: 1247 [2020-09-25 06:46:30,166 INFO L226 Difference]: Without dead ends: 669 [2020-09-25 06:46:30,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:30,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-09-25 06:46:30,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 621. [2020-09-25 06:46:30,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 06:46:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 06:46:30,289 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 149 [2020-09-25 06:46:30,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:30,291 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 06:46:30,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:46:30,291 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 06:46:30,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 06:46:30,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:30,301 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:30,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:46:30,301 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:30,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:30,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1111409233, now seen corresponding path program 1 times [2020-09-25 06:46:30,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:30,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082098599] [2020-09-25 06:46:30,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:30,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:30,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:30,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:31,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:31,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:35,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:35,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:35,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 06:46:35,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:46:35,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 06:46:35,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:35,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:35,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:35,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:46:35,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 06:46:35,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:46:35,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:35,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:35,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:35,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:35,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:35,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 06:46:35,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:35,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:35,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:35,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:35,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:35,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:35,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:35,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:35,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:35,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:46:35,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:35,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:46:35,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:35,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:35,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:35,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:35,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:46:35,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:35,704 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:35,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082098599] [2020-09-25 06:46:35,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:35,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:35,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584584436] [2020-09-25 06:46:35,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:35,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:35,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:35,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:35,709 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-25 06:46:38,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:38,010 INFO L93 Difference]: Finished difference Result 1531 states and 1847 transitions. [2020-09-25 06:46:38,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:46:38,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-25 06:46:38,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:38,024 INFO L225 Difference]: With dead ends: 1531 [2020-09-25 06:46:38,024 INFO L226 Difference]: Without dead ends: 932 [2020-09-25 06:46:38,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:46:38,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2020-09-25 06:46:38,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 922. [2020-09-25 06:46:38,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 922 states. [2020-09-25 06:46:38,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1103 transitions. [2020-09-25 06:46:38,089 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1103 transitions. Word has length 166 [2020-09-25 06:46:38,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:38,091 INFO L479 AbstractCegarLoop]: Abstraction has 922 states and 1103 transitions. [2020-09-25 06:46:38,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:46:38,092 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1103 transitions. [2020-09-25 06:46:38,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 06:46:38,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:38,099 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:38,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:46:38,099 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:38,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:38,101 INFO L82 PathProgramCache]: Analyzing trace with hash -375129923, now seen corresponding path program 1 times [2020-09-25 06:46:38,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:38,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699582556] [2020-09-25 06:46:38,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:38,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:38,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:38,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:38,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:38,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:38,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:39,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:40,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:40,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:41,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:41,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:42,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:42,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:43,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:43,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 06:46:43,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 06:46:43,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 06:46:43,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:43,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:43,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:43,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 06:46:43,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 06:46:43,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:43,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:43,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:43,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:43,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:43,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:43,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:46:43,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:43,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:43,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:43,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:43,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:43,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:43,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:43,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:43,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:43,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:46:43,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:43,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:46:43,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:43,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:43,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:43,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:46:43,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:43,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 06:46:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:43,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:43,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:43,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:46:43,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:43,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 06:46:43,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:43,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:46:43,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:46:43,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:43,438 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:46:43,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699582556] [2020-09-25 06:46:43,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:43,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:46:43,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830742951] [2020-09-25 06:46:43,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:46:43,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:43,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:46:43,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:43,443 INFO L87 Difference]: Start difference. First operand 922 states and 1103 transitions. Second operand 7 states. [2020-09-25 06:46:46,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:46,104 INFO L93 Difference]: Finished difference Result 2200 states and 2789 transitions. [2020-09-25 06:46:46,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:46:46,105 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-09-25 06:46:46,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:46,116 INFO L225 Difference]: With dead ends: 2200 [2020-09-25 06:46:46,116 INFO L226 Difference]: Without dead ends: 1300 [2020-09-25 06:46:46,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:46:46,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2020-09-25 06:46:46,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1243. [2020-09-25 06:46:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1243 states. [2020-09-25 06:46:46,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1474 transitions. [2020-09-25 06:46:46,189 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1474 transitions. Word has length 184 [2020-09-25 06:46:46,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:46,190 INFO L479 AbstractCegarLoop]: Abstraction has 1243 states and 1474 transitions. [2020-09-25 06:46:46,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:46:46,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1474 transitions. [2020-09-25 06:46:46,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 06:46:46,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:46,200 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:46,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:46:46,201 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:46,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:46,202 INFO L82 PathProgramCache]: Analyzing trace with hash 817645172, now seen corresponding path program 1 times [2020-09-25 06:46:46,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:46,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422900939] [2020-09-25 06:46:46,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:46,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:46,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:46,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:46,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:48,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:49,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:49,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:51,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:51,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 06:46:51,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:46:51,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 06:46:51,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:51,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:51,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:51,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 06:46:51,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 06:46:51,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:51,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:51,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:51,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:51,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:51,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:51,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:46:51,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:51,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:51,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:51,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:51,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:51,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:51,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:51,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:51,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:51,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:51,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:51,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:46:51,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:51,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:51,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:51,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:51,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:46:51,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:51,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 06:46:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:51,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:51,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:51,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:46:51,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:51,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:46:51,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:51,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:51,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:51,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:46:51,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:46:51,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:51,453 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:46:51,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422900939] [2020-09-25 06:46:51,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:51,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:46:51,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648568190] [2020-09-25 06:46:51,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:46:51,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:51,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:46:51,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:51,459 INFO L87 Difference]: Start difference. First operand 1243 states and 1474 transitions. Second operand 7 states. [2020-09-25 06:46:53,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:53,968 INFO L93 Difference]: Finished difference Result 2824 states and 3483 transitions. [2020-09-25 06:46:53,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:46:53,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2020-09-25 06:46:53,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:53,977 INFO L225 Difference]: With dead ends: 2824 [2020-09-25 06:46:53,978 INFO L226 Difference]: Without dead ends: 1603 [2020-09-25 06:46:53,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:46:53,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2020-09-25 06:46:54,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1571. [2020-09-25 06:46:54,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-09-25 06:46:54,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 1860 transitions. [2020-09-25 06:46:54,030 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 1860 transitions. Word has length 189 [2020-09-25 06:46:54,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:54,030 INFO L479 AbstractCegarLoop]: Abstraction has 1571 states and 1860 transitions. [2020-09-25 06:46:54,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:46:54,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 1860 transitions. [2020-09-25 06:46:54,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 06:46:54,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:54,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:54,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:46:54,041 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:54,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:54,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1713485497, now seen corresponding path program 1 times [2020-09-25 06:46:54,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:54,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669829399] [2020-09-25 06:46:54,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:54,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:54,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:54,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:54,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:59,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:59,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:59,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 06:46:59,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:46:59,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 06:46:59,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:59,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:59,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:59,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-09-25 06:46:59,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 06:46:59,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:59,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:59,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:59,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:59,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:59,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:59,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:46:59,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:59,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:59,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:59,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:59,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:59,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:59,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:59,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:59,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:59,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 06:46:59,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:59,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 06:46:59,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:59,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:59,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:59,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:59,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:46:59,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:59,414 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:59,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669829399] [2020-09-25 06:46:59,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:59,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:59,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760503243] [2020-09-25 06:46:59,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:59,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:59,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:59,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:59,417 INFO L87 Difference]: Start difference. First operand 1571 states and 1860 transitions. Second operand 5 states. [2020-09-25 06:47:01,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:01,021 INFO L93 Difference]: Finished difference Result 4208 states and 5166 transitions. [2020-09-25 06:47:01,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:47:01,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 06:47:01,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:01,034 INFO L225 Difference]: With dead ends: 4208 [2020-09-25 06:47:01,034 INFO L226 Difference]: Without dead ends: 2282 [2020-09-25 06:47:01,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:47:01,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2020-09-25 06:47:01,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2267. [2020-09-25 06:47:01,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2267 states. [2020-09-25 06:47:01,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 2629 transitions. [2020-09-25 06:47:01,103 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 2629 transitions. Word has length 191 [2020-09-25 06:47:01,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:01,104 INFO L479 AbstractCegarLoop]: Abstraction has 2267 states and 2629 transitions. [2020-09-25 06:47:01,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:47:01,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 2629 transitions. [2020-09-25 06:47:01,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 06:47:01,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:01,113 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:47:01,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:47:01,114 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:01,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:01,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1421897619, now seen corresponding path program 1 times [2020-09-25 06:47:01,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:01,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745874258] [2020-09-25 06:47:01,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:01,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:01,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:01,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:01,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:06,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:06,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 06:47:06,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:47:06,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 06:47:06,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:06,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:06,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:06,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 06:47:06,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 06:47:06,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:06,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:06,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking...