/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=SMALLEST --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/Problem11_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:25:52,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:25:52,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:25:52,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:25:52,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:25:52,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:25:52,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:25:52,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:25:52,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:25:52,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:25:52,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:25:52,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:25:52,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:25:52,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:25:52,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:25:52,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:25:52,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:25:52,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:25:52,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:25:52,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:25:52,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:25:52,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:25:52,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:25:52,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:25:52,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:25:52,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:25:52,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:25:52,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:25:52,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:25:52,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:25:52,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:25:52,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:25:52,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:25:52,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:25:52,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:25:52,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:25:52,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:25:52,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:25:52,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:25:52,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:25:52,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:25:52,585 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 [2020-09-24 18:25:52,612 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:25:52,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:25:52,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:25:52,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:25:52,614 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:25:52,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:25:52,615 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:25:52,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:25:52,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:25:52,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:25:52,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:25:52,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:25:52,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:25:52,616 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:25:52,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:25:52,617 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:25:52,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:25:52,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:25:52,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:25:52,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:25:52,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:25:52,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:25:52,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:25:52,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:25:52,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:25:52,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:25:52,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:25:52,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:25:52,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:25:52,620 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:25:53,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:25:53,104 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:25:53,109 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:25:53,110 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:25:53,111 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:25:53,112 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-24 18:25:53,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0844ef604/c0f9bb237c08438a878df605edc6817b/FLAGbbe123067 [2020-09-24 18:25:53,930 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:25:53,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-24 18:25:53,948 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0844ef604/c0f9bb237c08438a878df605edc6817b/FLAGbbe123067 [2020-09-24 18:25:54,080 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0844ef604/c0f9bb237c08438a878df605edc6817b [2020-09-24 18:25:54,098 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:25:54,106 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:25:54,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:25:54,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:25:54,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:25:54,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:25:54" (1/1) ... [2020-09-24 18:25:54,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb58955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:54, skipping insertion in model container [2020-09-24 18:25:54,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:25:54" (1/1) ... [2020-09-24 18:25:54,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:25:54,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:25:54,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:25:54,991 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:25:55,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:25:55,249 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:25:55,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:55 WrapperNode [2020-09-24 18:25:55,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:25:55,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:25:55,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:25:55,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:25:55,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:55" (1/1) ... [2020-09-24 18:25:55,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:55" (1/1) ... [2020-09-24 18:25:55,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:55" (1/1) ... [2020-09-24 18:25:55,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:55" (1/1) ... [2020-09-24 18:25:55,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:55" (1/1) ... [2020-09-24 18:25:55,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:55" (1/1) ... [2020-09-24 18:25:55,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:55" (1/1) ... [2020-09-24 18:25:55,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:25:55,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:25:55,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:25:55,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:25:55,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:55" (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 [2020-09-24 18:25:55,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:25:55,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:25:55,565 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:25:55,565 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:25:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:25:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:25:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:25:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:25:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:25:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:25:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:25:58,258 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:25:58,259 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:25:58,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:25:58 BoogieIcfgContainer [2020-09-24 18:25:58,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:25:58,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:25:58,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:25:58,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:25:58,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:25:54" (1/3) ... [2020-09-24 18:25:58,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef418ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:25:58, skipping insertion in model container [2020-09-24 18:25:58,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:55" (2/3) ... [2020-09-24 18:25:58,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef418ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:25:58, skipping insertion in model container [2020-09-24 18:25:58,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:25:58" (3/3) ... [2020-09-24 18:25:58,291 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label58.c [2020-09-24 18:25:58,305 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:25:58,320 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:25:58,346 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:25:58,391 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:25:58,392 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:25:58,392 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:25:58,393 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:25:58,393 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:25:58,393 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:25:58,393 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:25:58,393 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:25:58,442 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-24 18:25:58,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-24 18:25:58,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:58,457 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] [2020-09-24 18:25:58,458 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:58,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:58,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1378965372, now seen corresponding path program 1 times [2020-09-24 18:25:58,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:58,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281387881] [2020-09-24 18:25:58,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:58,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:58,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:59,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:59,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:59,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 18:25:59,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:25:59,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 856 [2020-09-24 18:25:59,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:25:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 18:25:59,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 18:25:59,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:25:59,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:59,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:59,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:59,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:25:59,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:59,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 18:25:59,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:59,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:59,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 18:25:59,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:59,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281387881] [2020-09-24 18:25:59,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:25:59,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:25:59,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217968836] [2020-09-24 18:25:59,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:59,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:59,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:59,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:59,768 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 5 states. [2020-09-24 18:26:05,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:05,208 INFO L93 Difference]: Finished difference Result 2361 states and 3156 transitions. [2020-09-24 18:26:05,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:26:05,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-09-24 18:26:05,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:05,246 INFO L225 Difference]: With dead ends: 2361 [2020-09-24 18:26:05,247 INFO L226 Difference]: Without dead ends: 1487 [2020-09-24 18:26:05,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:26:05,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2020-09-24 18:26:05,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1155. [2020-09-24 18:26:05,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-09-24 18:26:05,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1484 transitions. [2020-09-24 18:26:05,410 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1484 transitions. Word has length 39 [2020-09-24 18:26:05,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:05,411 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1484 transitions. [2020-09-24 18:26:05,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:26:05,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1484 transitions. [2020-09-24 18:26:05,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-24 18:26:05,418 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:05,418 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:26:05,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:26:05,419 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:05,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:05,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1767258319, now seen corresponding path program 1 times [2020-09-24 18:26:05,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:05,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939273103] [2020-09-24 18:26:05,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:05,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:05,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:05,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:06,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:06,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:08,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:08,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 18:26:08,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:26:08,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3279 [2020-09-24 18:26:08,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:08,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:08,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-24 18:26:08,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 18:26:08,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:08,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:08,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:08,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:08,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:26:08,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:08,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:26:08,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:08,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:08,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:08,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:08,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:08,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:26:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:08,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:09,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:09,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 18:26:09,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:09,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-24 18:26:09,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:09,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:09,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:09,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 18:26:09,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:09,155 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:26:09,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939273103] [2020-09-24 18:26:09,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:09,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:26:09,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326411624] [2020-09-24 18:26:09,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:26:09,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:09,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:26:09,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:26:09,160 INFO L87 Difference]: Start difference. First operand 1155 states and 1484 transitions. Second operand 5 states. [2020-09-24 18:26:12,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:12,697 INFO L93 Difference]: Finished difference Result 2906 states and 3919 transitions. [2020-09-24 18:26:12,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:26:12,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-09-24 18:26:12,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:12,714 INFO L225 Difference]: With dead ends: 2906 [2020-09-24 18:26:12,714 INFO L226 Difference]: Without dead ends: 1768 [2020-09-24 18:26:12,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:26:12,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2020-09-24 18:26:12,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1748. [2020-09-24 18:26:12,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1748 states. [2020-09-24 18:26:12,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2220 transitions. [2020-09-24 18:26:12,797 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2220 transitions. Word has length 120 [2020-09-24 18:26:12,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:12,800 INFO L479 AbstractCegarLoop]: Abstraction has 1748 states and 2220 transitions. [2020-09-24 18:26:12,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:26:12,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2220 transitions. [2020-09-24 18:26:12,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-24 18:26:12,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:12,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:26:12,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:26:12,812 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:12,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:12,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1373722232, now seen corresponding path program 1 times [2020-09-24 18:26:12,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:12,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381834592] [2020-09-24 18:26:12,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:12,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:13,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:13,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:13,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:14,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:15,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:16,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:16,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-24 18:26:16,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:26:16,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3519 [2020-09-24 18:26:16,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:16,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:16,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 18:26:16,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 18:26:16,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:16,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:16,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:16,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:16,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:26:16,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:16,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:26:16,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:16,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:16,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:16,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:16,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:16,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:26:16,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:16,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:16,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:16,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:26:16,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:16,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 18:26:16,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:16,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:16,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:16,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 18:26:16,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:26:16,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381834592] [2020-09-24 18:26:16,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:16,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:26:16,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805646848] [2020-09-24 18:26:16,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:26:16,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:16,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:26:16,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:26:16,707 INFO L87 Difference]: Start difference. First operand 1748 states and 2220 transitions. Second operand 5 states. [2020-09-24 18:26:20,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:20,301 INFO L93 Difference]: Finished difference Result 4699 states and 6203 transitions. [2020-09-24 18:26:20,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:26:20,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-09-24 18:26:20,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:20,321 INFO L225 Difference]: With dead ends: 4699 [2020-09-24 18:26:20,321 INFO L226 Difference]: Without dead ends: 2968 [2020-09-24 18:26:20,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:26:20,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-09-24 18:26:20,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 2941. [2020-09-24 18:26:20,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2941 states. [2020-09-24 18:26:20,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2941 states to 2941 states and 3813 transitions. [2020-09-24 18:26:20,422 INFO L78 Accepts]: Start accepts. Automaton has 2941 states and 3813 transitions. Word has length 128 [2020-09-24 18:26:20,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:20,426 INFO L479 AbstractCegarLoop]: Abstraction has 2941 states and 3813 transitions. [2020-09-24 18:26:20,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:26:20,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2941 states and 3813 transitions. [2020-09-24 18:26:20,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-24 18:26:20,434 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:20,435 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:26:20,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:26:20,436 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:20,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:20,441 INFO L82 PathProgramCache]: Analyzing trace with hash 254859126, now seen corresponding path program 1 times [2020-09-24 18:26:20,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:20,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94416344] [2020-09-24 18:26:20,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:20,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:20,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:20,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:21,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:21,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:21,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:22,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:25,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:25,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-24 18:26:25,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:26:25,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-24 18:26:25,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-24 18:26:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-24 18:26:25,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:25,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:25,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:25,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:25,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:26:25,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:25,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:26:25,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:25,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:25,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:26:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:25,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:25,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:25,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 18:26:25,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:25,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-24 18:26:25,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:25,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:25,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:25,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 18:26:25,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:25,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-24 18:26:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:25,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:26,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:26,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-24 18:26:26,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:26,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-24 18:26:26,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:26:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 18:26:26,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:26:26,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94416344] [2020-09-24 18:26:26,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:26,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:26:26,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425047942] [2020-09-24 18:26:26,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:26:26,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:26,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:26:26,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:26:26,224 INFO L87 Difference]: Start difference. First operand 2941 states and 3813 transitions. Second operand 7 states. [2020-09-24 18:26:31,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:31,255 INFO L93 Difference]: Finished difference Result 7420 states and 10854 transitions. [2020-09-24 18:26:31,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:26:31,255 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 235 [2020-09-24 18:26:31,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:31,297 INFO L225 Difference]: With dead ends: 7420 [2020-09-24 18:26:31,298 INFO L226 Difference]: Without dead ends: 4496 [2020-09-24 18:26:31,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:26:31,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4496 states. [2020-09-24 18:26:31,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4496 to 4170. [2020-09-24 18:26:31,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4170 states. [2020-09-24 18:26:31,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4170 states to 4170 states and 5635 transitions. [2020-09-24 18:26:31,470 INFO L78 Accepts]: Start accepts. Automaton has 4170 states and 5635 transitions. Word has length 235 [2020-09-24 18:26:31,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:31,471 INFO L479 AbstractCegarLoop]: Abstraction has 4170 states and 5635 transitions. [2020-09-24 18:26:31,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:26:31,471 INFO L276 IsEmpty]: Start isEmpty. Operand 4170 states and 5635 transitions. [2020-09-24 18:26:31,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-24 18:26:31,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:31,481 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:26:31,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:26:31,481 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:31,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:31,482 INFO L82 PathProgramCache]: Analyzing trace with hash 687334910, now seen corresponding path program 1 times [2020-09-24 18:26:31,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:31,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792533078] [2020-09-24 18:26:31,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:31,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:31,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:31,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:32,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:34,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:36,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:36,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-24 18:26:36,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:26:36,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 18:26:36,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:36,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:36,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-24 18:26:36,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 18:26:36,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:36,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:36,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:36,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:36,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:26:36,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:36,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:26:36,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:36,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:36,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:36,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:36,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:36,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:26:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:36,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:36,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:36,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 18:26:36,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:36,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-24 18:26:36,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:36,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:36,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:36,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 18:26:36,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:36,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-24 18:26:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:36,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:37,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:37,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 18:26:37,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:37,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-09-24 18:26:37,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:37,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:37,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:26:37,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-24 18:26:37,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:26:37,310 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:26:37,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792533078] [2020-09-24 18:26:37,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:37,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:26:37,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637449212] [2020-09-24 18:26:37,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:26:37,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:37,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:26:37,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:26:37,313 INFO L87 Difference]: Start difference. First operand 4170 states and 5635 transitions. Second operand 7 states. [2020-09-24 18:26:42,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:42,108 INFO L93 Difference]: Finished difference Result 10497 states and 14990 transitions. [2020-09-24 18:26:42,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:26:42,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-09-24 18:26:42,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:42,149 INFO L225 Difference]: With dead ends: 10497 [2020-09-24 18:26:42,149 INFO L226 Difference]: Without dead ends: 6344 [2020-09-24 18:26:42,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:26:42,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6344 states. [2020-09-24 18:26:42,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6344 to 5635. [2020-09-24 18:26:42,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5635 states. [2020-09-24 18:26:42,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5635 states to 5635 states and 7745 transitions. [2020-09-24 18:26:42,359 INFO L78 Accepts]: Start accepts. Automaton has 5635 states and 7745 transitions. Word has length 240 [2020-09-24 18:26:42,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:42,360 INFO L479 AbstractCegarLoop]: Abstraction has 5635 states and 7745 transitions. [2020-09-24 18:26:42,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:26:42,360 INFO L276 IsEmpty]: Start isEmpty. Operand 5635 states and 7745 transitions. [2020-09-24 18:26:42,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-24 18:26:42,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:42,373 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:26:42,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:26:42,373 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:42,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:42,374 INFO L82 PathProgramCache]: Analyzing trace with hash 538077387, now seen corresponding path program 1 times [2020-09-24 18:26:42,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:42,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095675005] [2020-09-24 18:26:42,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:42,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:42,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:42,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking...