/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=0.4 --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/Problem01_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:34:48,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:34:48,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:34:48,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:34:48,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:34:48,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:34:48,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:34:48,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:34:48,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:34:48,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:34:48,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:34:48,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:34:48,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:34:48,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:34:48,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:34:48,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:34:48,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:34:48,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:34:48,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:34:48,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:34:48,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:34:48,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:34:48,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:34:48,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:34:48,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:34:48,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:34:48,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:34:48,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:34:48,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:34:48,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:34:48,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:34:48,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:34:48,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:34:48,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:34:48,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:34:48,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:34:48,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:34:48,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:34:48,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:34:48,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:34:48,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:34:48,636 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 05:34:48,697 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:34:48,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:34:48,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:34:48,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:34:48,702 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:34:48,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:34:48,702 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:34:48,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:34:48,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:34:48,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:34:48,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:34:48,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:34:48,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:34:48,704 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:34:48,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:34:48,705 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:34:48,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:34:48,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:34:48,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:34:48,706 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:34:48,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:34:48,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:34:48,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:34:48,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:34:48,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:34:48,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:34:48,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:34:48,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:34:48,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:34:48,708 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:34:49,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:34:49,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:34:49,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:34:49,226 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:34:49,227 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:34:49,228 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-25 05:34:49,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/169b1e27d/f8e2d173128f4962bdbef4ceb622d18f/FLAGf15aea413 [2020-09-25 05:34:49,937 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:34:49,938 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-25 05:34:49,952 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/169b1e27d/f8e2d173128f4962bdbef4ceb622d18f/FLAGf15aea413 [2020-09-25 05:34:50,193 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/169b1e27d/f8e2d173128f4962bdbef4ceb622d18f [2020-09-25 05:34:50,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:34:50,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:34:50,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:50,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:34:50,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:34:50,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:50" (1/1) ... [2020-09-25 05:34:50,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd4ce29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:50, skipping insertion in model container [2020-09-25 05:34:50,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:50" (1/1) ... [2020-09-25 05:34:50,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:34:50,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:34:50,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:50,939 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:34:51,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:51,073 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:34:51,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:51 WrapperNode [2020-09-25 05:34:51,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:51,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:34:51,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:34:51,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:34:51,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:51" (1/1) ... [2020-09-25 05:34:51,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:51" (1/1) ... [2020-09-25 05:34:51,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:51" (1/1) ... [2020-09-25 05:34:51,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:51" (1/1) ... [2020-09-25 05:34:51,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:51" (1/1) ... [2020-09-25 05:34:51,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:51" (1/1) ... [2020-09-25 05:34:51,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:51" (1/1) ... [2020-09-25 05:34:51,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:34:51,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:34:51,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:34:51,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:34:51,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:51" (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 05:34:51,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:34:51,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:34:51,291 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:34:51,292 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:34:51,292 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:34:51,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:34:51,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:34:51,293 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:34:51,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:34:51,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:34:51,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:34:52,747 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:34:52,749 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:34:52,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:52 BoogieIcfgContainer [2020-09-25 05:34:52,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:34:52,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:34:52,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:34:52,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:34:52,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:34:50" (1/3) ... [2020-09-25 05:34:52,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f458e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:52, skipping insertion in model container [2020-09-25 05:34:52,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:51" (2/3) ... [2020-09-25 05:34:52,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f458e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:52, skipping insertion in model container [2020-09-25 05:34:52,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:52" (3/3) ... [2020-09-25 05:34:52,779 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label58.c [2020-09-25 05:34:52,791 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:34:52,804 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:34:52,827 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:34:52,861 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:34:52,861 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:34:52,862 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:34:52,862 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:34:52,862 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:34:52,862 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:34:52,862 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:34:52,862 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:34:52,899 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:34:52,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 05:34:52,920 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:52,921 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] [2020-09-25 05:34:52,922 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:52,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:52,930 INFO L82 PathProgramCache]: Analyzing trace with hash 2032478133, now seen corresponding path program 1 times [2020-09-25 05:34:52,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:52,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770742548] [2020-09-25 05:34:52,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:53,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:53,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:53,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:54,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:55,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:55,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:58,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:58,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 05:34:58,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:34:58,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 05:34:58,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:58,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:34:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:34:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 05:34:58,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:34:58,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:58,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:58,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:58,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:58,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:58,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 05:34:58,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:58,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:58,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:58,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:58,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:34:58,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:58,561 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 05:34:58,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770742548] [2020-09-25 05:34:58,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:58,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:34:58,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097465594] [2020-09-25 05:34:58,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:34:58,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:58,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:34:58,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:34:58,596 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 05:35:00,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:00,874 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 05:35:00,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:35:00,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-09-25 05:35:00,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:00,919 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 05:35:00,919 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 05:35:00,929 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 05:35:00,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 05:35:01,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 05:35:01,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 05:35:01,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 05:35:01,038 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 127 [2020-09-25 05:35:01,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:01,039 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 05:35:01,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:35:01,039 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 05:35:01,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 05:35:01,048 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:01,048 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:35:01,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:35:01,049 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:01,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:01,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1111410035, now seen corresponding path program 1 times [2020-09-25 05:35:01,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:01,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121515518] [2020-09-25 05:35:01,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:01,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:02,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:06,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 05:35:06,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:35:06,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 05:35:06,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:06,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:06,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:35:06,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:35:06,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 05:35:06,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:06,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:06,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:06,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:35:06,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:06,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 05:35:06,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:06,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:35:06,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:06,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:35:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:06,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:06,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:35:06,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:06,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 05:35:06,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:06,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:35:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:35:06,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:06,377 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:06,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121515518] [2020-09-25 05:35:06,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:35:06,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:35:06,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004392070] [2020-09-25 05:35:06,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:35:06,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:06,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:35:06,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:35:06,382 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 05:35:08,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:08,660 INFO L93 Difference]: Finished difference Result 1591 states and 1980 transitions. [2020-09-25 05:35:08,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:35:08,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-09-25 05:35:08,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:08,668 INFO L225 Difference]: With dead ends: 1591 [2020-09-25 05:35:08,669 INFO L226 Difference]: Without dead ends: 1012 [2020-09-25 05:35:08,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:35:08,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-09-25 05:35:08,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 966. [2020-09-25 05:35:08,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-09-25 05:35:08,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1174 transitions. [2020-09-25 05:35:08,720 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1174 transitions. Word has length 148 [2020-09-25 05:35:08,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:08,720 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1174 transitions. [2020-09-25 05:35:08,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:35:08,721 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1174 transitions. [2020-09-25 05:35:08,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 05:35:08,726 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:08,726 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] [2020-09-25 05:35:08,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:35:08,727 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:08,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:08,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1441250023, now seen corresponding path program 1 times [2020-09-25 05:35:08,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:08,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052160846] [2020-09-25 05:35:08,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:08,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:08,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:09,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:09,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:11,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:11,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:12,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:13,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:13,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:13,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 05:35:13,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:35:13,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 05:35:13,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:13,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:13,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:35:13,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:35:13,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:35:13,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:13,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:13,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:13,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:13,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:35:13,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:13,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 05:35:13,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:13,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:13,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:13,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:13,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:35:13,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:13,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:35:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:13,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:13,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:13,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:35:13,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:13,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 05:35:13,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:13,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:35:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:35:13,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:14,107 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:14,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052160846] [2020-09-25 05:35:14,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:35:14,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 05:35:14,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321494909] [2020-09-25 05:35:14,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:35:14,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:14,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:35:14,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:35:14,111 INFO L87 Difference]: Start difference. First operand 966 states and 1174 transitions. Second operand 8 states. [2020-09-25 05:35:17,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:17,373 INFO L93 Difference]: Finished difference Result 3133 states and 4043 transitions. [2020-09-25 05:35:17,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:35:17,374 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-09-25 05:35:17,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:17,394 INFO L225 Difference]: With dead ends: 3133 [2020-09-25 05:35:17,394 INFO L226 Difference]: Without dead ends: 2191 [2020-09-25 05:35:17,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:35:17,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2020-09-25 05:35:17,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 2064. [2020-09-25 05:35:17,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2064 states. [2020-09-25 05:35:17,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 2593 transitions. [2020-09-25 05:35:17,509 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 2593 transitions. Word has length 149 [2020-09-25 05:35:17,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:17,509 INFO L479 AbstractCegarLoop]: Abstraction has 2064 states and 2593 transitions. [2020-09-25 05:35:17,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:35:17,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 2593 transitions. [2020-09-25 05:35:17,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 05:35:17,523 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:17,524 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] [2020-09-25 05:35:17,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:35:17,524 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:17,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:17,525 INFO L82 PathProgramCache]: Analyzing trace with hash -2031815638, now seen corresponding path program 1 times [2020-09-25 05:35:17,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:17,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591262758] [2020-09-25 05:35:17,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:17,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:17,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:18,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:19,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:20,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:21,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:21,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:22,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:22,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 05:35:22,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:35:22,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 05:35:22,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:22,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:22,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:22,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 05:35:22,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:35:22,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:22,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:22,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:22,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:22,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:35:22,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:22,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:35:22,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:22,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:22,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:22,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:35:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:22,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:22,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:22,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:35:22,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:22,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:35:22,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:22,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:22,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:22,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:22,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:35:22,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:22,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 05:35:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:22,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:22,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:22,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:35:22,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:22,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 05:35:22,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:22,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:22,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:22,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:35:22,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:35:22,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:22,918 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 05:35:22,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591262758] [2020-09-25 05:35:22,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:22,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:35:22,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443828592] [2020-09-25 05:35:22,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:35:22,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:22,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:35:22,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:35:22,923 INFO L87 Difference]: Start difference. First operand 2064 states and 2593 transitions. Second operand 8 states. [2020-09-25 05:35:24,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:24,966 INFO L93 Difference]: Finished difference Result 5402 states and 6913 transitions. [2020-09-25 05:35:24,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:35:24,967 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 05:35:24,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:24,986 INFO L225 Difference]: With dead ends: 5402 [2020-09-25 05:35:24,986 INFO L226 Difference]: Without dead ends: 3362 [2020-09-25 05:35:24,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:35:24,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3362 states. [2020-09-25 05:35:25,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3362 to 2650. [2020-09-25 05:35:25,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2650 states. [2020-09-25 05:35:25,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 3384 transitions. [2020-09-25 05:35:25,084 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 3384 transitions. Word has length 165 [2020-09-25 05:35:25,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:25,084 INFO L479 AbstractCegarLoop]: Abstraction has 2650 states and 3384 transitions. [2020-09-25 05:35:25,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:35:25,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 3384 transitions. [2020-09-25 05:35:25,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 05:35:25,094 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:25,095 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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 05:35:25,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:35:25,095 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:25,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:25,096 INFO L82 PathProgramCache]: Analyzing trace with hash -531650440, now seen corresponding path program 1 times [2020-09-25 05:35:25,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:25,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616515916] [2020-09-25 05:35:25,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:25,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:25,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:25,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:26,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:27,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:28,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:29,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:30,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:30,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 05:35:30,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:35:30,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 05:35:30,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:30,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:30,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:30,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:35:30,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:35:30,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 05:35:30,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:30,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:30,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:30,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:35:30,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:30,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:35:30,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:30,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:30,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:30,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:30,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:30,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:35:30,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:35:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:30,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:30,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:30,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:35:30,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:30,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:35:30,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:30,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:30,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:30,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:30,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:35:30,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:30,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:35:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:30,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:30,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:30,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:35:30,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:30,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 05:35:30,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:30,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:30,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:30,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:35:30,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:35:30,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:30,412 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 05:35:30,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616515916] [2020-09-25 05:35:30,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:30,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:35:30,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062960286] [2020-09-25 05:35:30,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:35:30,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:30,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:35:30,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:35:30,415 INFO L87 Difference]: Start difference. First operand 2650 states and 3384 transitions. Second operand 7 states. [2020-09-25 05:35:32,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:32,575 INFO L93 Difference]: Finished difference Result 5616 states and 7226 transitions. [2020-09-25 05:35:32,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:35:32,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-09-25 05:35:32,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:32,597 INFO L225 Difference]: With dead ends: 5616 [2020-09-25 05:35:32,597 INFO L226 Difference]: Without dead ends: 2990 [2020-09-25 05:35:32,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:35:32,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2020-09-25 05:35:32,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 2795. [2020-09-25 05:35:32,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2795 states. [2020-09-25 05:35:32,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 3542 transitions. [2020-09-25 05:35:32,683 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 3542 transitions. Word has length 170 [2020-09-25 05:35:32,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:32,683 INFO L479 AbstractCegarLoop]: Abstraction has 2795 states and 3542 transitions. [2020-09-25 05:35:32,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:35:32,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 3542 transitions. [2020-09-25 05:35:32,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 05:35:32,694 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:32,694 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:35:32,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:35:32,695 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:32,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:32,695 INFO L82 PathProgramCache]: Analyzing trace with hash 2069482775, now seen corresponding path program 1 times [2020-09-25 05:35:32,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:32,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444388726] [2020-09-25 05:35:32,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:32,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:32,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:33,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:33,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:33,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:33,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:33,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:33,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:33,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:34,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:34,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:35,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:35,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:36,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:36,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:37,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking...